So good! Jinbee has already told a lot about this episode, and taken all of my views regarding it.
But some points,
It was lovely to see Christina addressing the people, and the way Aiga was pumped upbfor the battle was great.
I really liked like how Xhan had sensed that Xhaka was standing up there, sixth sense on next level XD
Xhaka vs Aiga, not a big fan really.. Just a filler.. It's all just ends up making Aiga's dark aura more serious.. Just one thing to note, Xhaka can see a incarnatuon of Valt in Aiga, so if Aiga is going all possessed, I am pretty sure that it's going to be upto Valt or Valt will play the major role. Another point that supports this is that, in the opening, the ending scene, you can see Aiga running and then Valt shadows up alonf with Valkryie.. Just a thought.
Valt vs Aiga!!!! Finally!!
We see Laban, Houi, Souh and our cute goblin XD aka Kyle on their phones. Was great to see that cameo.. Was missing this gang all together.  
But that battle though, I can't wait to see more!!! Next episode is going to reveal soo much!!
Preview
For the first time, Phi looks concerned, I guess something will happen with Aiga and Achilles that even Phi would not have anticipated. Nika and Toku crying, Aiag's sister worried, everything shows that, it will be a tensed battle.
That's all.

First off, this episode was like...partial filler. It was like episode 51 for Burst and Evolution with training and flashbacks and other...stuff. Xhaka/Xander vs Aiga was cool, Xhaka/Xander was SUPER powerful, except now there’s one drawback to his character and that’s the fact that he couldn’t sense Aiga’s dark power. All the other ‘legend’ Bladers could (Free and Valt,(and Shu would notice it right away.)) Seeing Christina in the camera with Valt popping in and out was funny. Aiga and Fubuki, Ranjiro, and Xhan training was...probably the filleriest part. 
The Aiga and Valt battle though, was by far the best part. When both beys flew out of the stadium I loved how it was just like their first battle.
Episode 28 trailer: This episode looks wild! Completely possessed Aiga and Valt going all out and Phi actually looks worried and expressed...emotion...for the first time in his life.

there's still no new opening T_T
Anyway, I expected this episode to be pretty boring from the preview but it has really exceeded my expectations. The Xhaka part may have felt a bit filler-ish but Aiga needed some training montage otherwise people would complain, and adding an old character to it was a great idea.
Now for the battle.. it was AWESOME. It was basically a big throwback to episode 1.
But, the next episode now that's one that I have high expectations for. Expecting a huge battle full of emotions and stuff so don't let me down beyblade

I had sent this to a WhatsApp group. I will add bit more below so keep reading even if you seen that msg

[02/10, 2:53 AM] FIREFIRE CPB: I watched only half. But today's burst episode was SUCH AN AMAZING BEYMAZING. It was very exciting all the way (I know many call some part of it filler. Sure Ranjiro part was. But I won't call Fubuki, Ranjiro and Xean vs Aiga as filler. I mean it wasn't most important battle but it demonstrates important features of Achilles and inconsistencies. But Xhaka vs Aiga was simply amazing. I think Xhaka is only one now who broke through Z Defence of Zet Achilles (though Ranjiro did. But he used tornado? and lifted Achilles from ground). Though battle results in tie.
[02/10, 2:54 AM] FIREFIRE CPB: This was most explosive and amazing battle along with Aiga vs Free
[02/10, 2:54 AM] FIREFIRE CPB: Aiga is turning dark. But that's making show such an amazing?
[02/10, 2:55 AM] FIREFIRE CPB: Music when he turns dark is killer

I have to say burst is most developed series of beyblade in both anime and beys.

If this continues. It will soon exceed plastic gen from my heart
[02/10, 2:57 AM] FIREFIRE CPB: *I wonder*, what will happen if Zet Achilles do that jumpimg move, that double zet slash and z defence together?! Even Spriggan will be (I can't say after here else people will hakai me?)

But I wonder. Valkyrie used only 1 wing for god and winning slash. What if he use ALL 3
[02/10, 2:58 AM] FIREFIRE CPB: With Winning Flash Shoot and Winning Jet Shoot?!
[02/10, 2:58 AM] FIREFIRE CPB: I'm guessing this is what exactly going to happen in Valt vs Aiga

Okay so after this:-
Valt vs Aiga happens. I was so so much excited for this. Aiga choose defence mode. And Valkyrie successfully pushes zA out of middle. That make zA dodge wV's attack just like it did in first battle and move in a agressive pattern (confirmed Achilles can still do Fusion like movement in anime) And did I said this battle was very similar to first battle of them? Just Achilles didn't out speeded Valkyrie. Then Valkyrie gives a boost in speed, hits achiles and sent it flying. I thought that's the end of this battle and Aiga will turn dark in next. But he did in this one. Achilles hits the wall and comes back in stadium (I'm not sure but I think same thing happened in 1st one too). Achilles speeds up too and both clashes. Both beys flies in same way they did in 1st battle. Idk why my heart was beating so fast even though I knew zA is going to burst again. Ahh predicted haha. BUT, it doesn't and wV gets KOed. Something happens what it could have in first episode.

Okay so for trailer. Valkyrie does Winning Flash and surprisingly Achilles survives. Then Achilles use Z Defence, which Valkyrie will probably break through easily (or what? You mean Valkyrie has less attack than Xcalibur? Even when it beated X 2 times. Even God Slash KOed dF which Triple Impact couldn't. What are you talking about?!?). Then Aiga turn super dark (RIP Valkyrie. This is 3rd time now) and everyone is super shocked. Mika was crying. This is something serious. Even Phai shocked? Maybe it's even beyond his expection. Valkyrie will break for sure. Making way for next gen valkyrie which will beat our new villain. Akaba Aiga! (New valkyrie's purpose and aiga being new villain is not my theory though)

What if Achilles and Valkyrie situation I said in my whatsapp chat above comes true? First jumping move will weaken valkyie, then z slash vs winning slash, then z defence vs 2nd winning slash (note all this is happening in same clash. Beys Haven't moved around a bit), both beys survives (valkyrie too surprisingly who even when it received alot of damage first), then 3rd Z and God slash. This is where either Valkyrie will burst due to being weaken. Or Valkyrie will survive against and Z Achilles breaks it all together.

This was my review and prediction. Sorry it wasn't as clean and organised maybe as my old posts. But i wrote it outside home so I wasn't as comfortable