Not 100 percent sure if this will happen but

Botters still win under this system. They have dozens of accounts to do this on.

There are two matters that give botters an advantage. Attacking a full map to obtain items easier, and usually godmode.

With this system, it would not give them any advantage over others besides time. Sure, a botter may be able to collect all twenty nebulites in an hour where it may take a normal player an hour and a half to two, but they are still only able to produce two nebulites per character. A normal player can just switch characters and continue on getting nebulites.

If that wasn't in place, then it would be much, much worse. Would you rather a botting character to produce two nebulites or a couple hundred.