[quote=@HaltingBlooper]
Changing the weakness

Edit: Added what might happen.
[/quote]

I don't think you're quite getting the point. The strength is something that makes the gem feel more in tune with their powers and would make it easier to fuse while the weakness is an emotion that throws them off balance and would make them feel uncomfortable and would knock them out of a fusion if the emotion occured during one. Both are supposed to be an actual emotion and overreaction is not an emotion