And remember how much better we were before then~~
/stares off wistfully
Anyway, to be clear, I'm not saying it can't happen or that it won't happen. I just don't think it happening once in a very particular circumstance for very particular character reasons means it will happen any time armour is involved. To me there is just not enough to suggest it at this point and frankly I would find it kind of a cheap development that sort of undermines Terra's character and story just for the sake of mythology building. But that probably means it is going to happen, so.
(I also don't think Aqua expressed any kind of strong enough emotions to leave behind such a will when she departed from the armour. Like a huge part of her character to me was trying to suppress intense emotions due to the darkness and shit and after she gets rid of the armour she basically just calmly accepts her fate without any strong reaction, that's hardly enough to make a LW)