MarxistI think the inherent problem here is that we're looking to ready-made solutions like new items to change our game when we should instead be expending more effort into fostering in new maps and map makers. Just the inclusion of CP_Process changed the way some teams play in regards to pushing off of last, the ramp rollouts, and so on that are nice subtle changes that don't obliterate the entire history of comp tf2, while providing us with something fresh and new.
But that requires actual work on the part of somebody (besides whichever guy made the random items valve releases) so it's not a particularly popular option. Especially given that we don't have any particular system for testing new maps - and our selection of new maps tends to be incredibly biased.
If we really want change that badly (CS has been playing on the same maps with only 3 new weapons for over 10 years, quake gets a new map every now and again) we should look into coming up with a system that will encourage people to become map makers, and to test those maps with like weekend pug tournaments or something. If we were in a place where we had so many good new maps that cp_badlands was the map we were talking about cutting as opposed to relative stinkers like GPIT and/or metalworks we'd be a much healthier scene imo (of course, I doubt we'll ever see the end of badlands but I use it here for effect ;) ).
Wow, you want someone to put a shit ton of time and energy into making a map, testing it, and then have a huge pool of maps to choose from? WHAT A WONDERFUL WORLD THAT WOULD BE!
Unfortunately, no one is willing to put the time and energy into actually testing them. On top of that, the community's general reception to ANYTHING new, whether its a map or item, is so fucking abominable that the comp community has pretty much alienated anyone who would be willing to make any maps whatsoever. The diehard fanatics who do focus on comp play STILL can't get maps tested by anyone, even with an entire forum section dedicated to new maps, and even if they do they would still get shit on by everyone (WHATS THIS DUMB SHIT! LETS JUST PLAY BADLANDNNDDS!).
An acceptance of new things (maps, unlocks, strategies, etc) is fundamental to getting new things, and this community's attitude is pretty much anathema to any such endeavor.