First off, nice work in pulling together such a long and detailed post, TBD.
Honestly, I feel like the worst possible option would be banning it in certain regions because I feel like that could reach a point where bladers who have a good F230 and are able to travel would start attending tournaments where it wasn't banned in order to use it. I personally have not experienced F230 sweeping a tournament, but I've seen enough data on here that it scares me. I assumed it wouldn't be a problem since it hadn't reached all regions, but when I heard that a number of CT bladers planned to get one after their previous tournament, it made me a little disappointed.
Agreeing not to use the part is no better. One cannot simply trust everyone at a tournament not to use the part and if we are to the point where we must agree not to use it, I see no reason why it shouldn't be banned all together to make this agreement official.
I have always liked switching it up, so to speak, at tournaments. I like trying to use at least 3 or 4 different combinations to win, but with one part being spammed, this is impossible. All this evidence proves that a good mold is a sure win.
Of course, I can see why people who have their hands on one would be upset—the part is expensive and obviously requires a great deal of money and time to acquire, which is why I would suggest giving a warning a month or so before a ban, so that anyone who bought one recently will be able to get some competitive use out of it before they have to put it away.
At this point, I'm beginning to lose hope. I, personally, do not have the money to afford half a dozen random booster volume 3s or spend $50 on one beyblade part that will eventually need to be replaced. If F230 "sweeps" the next tournament I attend, I may have to seriously consider calling it quits because honestly, there's no point in competing if I don't have the one part that will give me a chance to win.