BvDrHappinessAbsolute Must Nots: Listen to random content creators for legitimate advice.This I think is really important. Although I wouldn't say don't listen to a random content creator but instead: "Don't listen to just one individual".E.g. just because someone has played comp tf2 for many years and is playing prem/invite now doesn't mean that their opinion reflects the entire tf2 comp community.
Best case scenario in my opinion would be to either let the community vote (which requires some good voting options in the first place) or to just draft a bunch of tf2 players from different divisions/continents and ask them/discuss with them what they'd want.
Since I'm pretty certain neither of those things are going to happen I think the easiest thing for them to do would just be to be transparent on what they are trying to implement and then listen to community feedback and make changes but only if they absolutely feel like they must (sometimes I feel like the tf2 community rebels against certain ideas/implementations only to later enjoy them).
listening to everyones opinion regardless of div/skill level is the reason shit like the spoon, winger, quickies, loch n load etc arent banned yet
id say that at this point in time making it to at least low prem or invite is required for someone to have a good understanding of what makes the game suck ape dick and what makes it good or at least not as bad to play