limiting the last med from changing classes and some system to ensure a med 100% of the time (volunteer on add up & enforce one volunteer for parties of 4 or more?)
class limits dont matter imo, like you can have 4 demos and two meds and get none of the benefits of that much choke control because of constant pushing. imo they're just a hacky way of forcing class balance
placement matches dont matter, just cover your rank for 10 games if you care cause that's pretty much all they do
however a proper elo system does matter, seriously what proper ranking system starts you off at the very bottom
non-op aids unlocks should be fixed, mainly quick-fix is pretty powerful just because of the build speed and the fact that buffs dont matter much because no-one manages them well, likewise stuff like critacola is crazy good at lower dm levels