Badwater is what a single-stage payload map should be. You must not play much scout or spy, because goldrush does everything it can to invalidate those classes. They don't make maps like goldrush anymore because they realized they were mindless, repetitive, unbalanced, spamtacular garbage that completely ruined the idea of having 9 classes that all have their own use. Badwater was a big deal when it came out. It was the first non-5cp/ non-gravelpit map that was not made specifically to screw over spies. It's not "too big" or "overdeveloped" (what does that even mean?), you're just refusing to figure out TF2.
And TF2 isn't a spammy arena shooter. If you think 32-player goldrush is in any way an acceptable substitute for Quake 3, then I don't know what Quake 3 you were playing. You don't even seem to be giving TF2 a chance. The game is far more nuanced than you apparently believe. Valve didn't put a 24 player cap just so you couldn't have 32 player games, they put a 24 player cap because any more than that is garbage. The game is specifically made to work best with 12-24 players. Any more than that and the balance of the classes is gone. Demoman becomes blatantly superior to soldier, snipers never run out of targets and are a constant presence, spies can't do anything, scouts die instantly, sentries are untouchable due to the massive wave of players in front of them, and so on. It's just crap, and it's not what TF2 is supposed to be. I'm not saying Valve knows best, because we've seen in the past 2 years that they barely know anything regarding balance anymore. But they certainly know better than the 32-player instant respawn servers.
It would be like playing 50 player Unreal Tournament (on indoor, non-vehicle maps) where the rocket launcher's primary fire shoots 4 rockets, the Shock Rifle just fires a stream of shock combos, and the sniper is always a one-hit kill. Is it amusing? Sure, for a while. But is there anything to it? Will you learn anything about the game or become better at the game by playing this way? Not even close.