Multiple messages... :D

1. The limit of 30 is by the chain... everyone can only vote 30 times. But if you meant characters on messages (that's an UI strategy, not a real limit) :D
2. Yeah, might get removed one day, if the costs of doing so are not too much, and also if that does not pose an attack vector to the chain. Automatic things can create lots of problems nowadays... and on chain, they have costs. So one need to carefull make decisions about how to implement code changes.