I have some ideas:
Keep+: a metal bit is added around the very top of the rubber and around the driver itself, giving it more weight and KO resistance
Buster Xcalibur+: You can replace the tip of the sword with rubber
Yielding'; just what it says
Hybrid+: it now makes the tip metal and the bottom of it rubber. You can swap the 2 points anytime
Diabolos': Makes the teeth tighter
Lord+: You can remove the bit which doesn't allow layer weights, with the cost of spin direction change
Trans+: Make the tip metal and the mode change bit way tighter to move
Atomic+: Makes the ball metal
I will make some more later.....
Yeet.
The greatest story of all time didn’t start with ‘Once Upon a Time’ it started with ‘Welcome to the world of Beyblade’ instead
Sorry UltimateMaster for copying you