T+T wasn't good. It was a flavor of the month weapon pack that got out of hand. Being played on every server and emphasized a fake "balance".
I miss Gravity Cat's over stylistic and awkward weapons like the 2009 mega pack.
We don't need any more cars. Like the average car to any other non-car vehicle ratio is 30:1.
Maps weren't that bad to begin with and using shaders to gain a quick buck from the steam sale was bad. Players who couldn't build were forced to learn or quit. The overall reaction to new players was bad as well, many of them quit due to being harassed or bullied out of game.
ZAPT was a good gamemode.
ZAPT needs to come back.
Murder Mystery was heavily stacked if a player was in voice comms with 2+ players. They usually trolled the stuff out of everyone and ruined the gamemode for players who were trying to have fun.
Merps aren't fun.
City Rps or RPGS aren't fun, they're annoying and trying to rp seriously will get you killed or jailed half the time.
Losing Ephelasltittie, Epheaslalteies, elftits due to a uncharacteristically childish argument was bad.
Edit: I miss MarbleMan's stuff. Even though some of his addons had backdoors a lot of his stuff was genuinely cool.