Frankly I think a few people need to realize a few things.
A. Valve's support for our community is minimal at best. Occasional blog posts, occasional conversations with the single individual who maintains this game, and medals for UGC. This will not change no matter what we do, so it is pointless to attempt to appease Valve, because frankly, it's praying to a God that doesn't exist.
Therefore we need to do what's best for the format irrespective of what we may believe Valve wants, because Valve doesn't really care if we live or die.
B. There is no magic bullet that will turn Tf2 into Dota 2, LoL, or Sc2. Doing things to help are never bad, but it's fairly obvious that the display today was sub-par. The viewer numbers are fairly straight forward, traditionally we're over 3k from the very beginning. Not so for this LAN where we often struggled to stay over 2k. "Trying to speed up the game" so as to make it more popular isn't the magic bullet, i46, i49, fundraisers, documentaries, they aren't the magic bullet. They're nice things that most of us enjoy, but they aren't magic bullets and aren't intended to be, and I think a lot of people are clinging to the idea of the quick fix in the hope that it will be that magic thing. It's not - this can be empirically proven by anybody who looks at view counts over the past several LANs.
C. The only factor that changed from the last 5 LANs, for the most part (besides the EQ nerf, the over dose, conch, warmfront/metalworks) is the inclusion of the quick fix.
D. Banning an item that ruins the flow of the game has been used NUMEROUS times in TF2's history to preserve the format and improve playability. Random crits, Bonk, Crit-a-cola, minisentries, wrangler, frontier justice, widowmaker, natascha, GRU, limitations on demoman, heavy, engineer; just to name a few. While some of those items have a more radical impact on game play than even the quickfix, they were all removed for the same reasons that you would remove quickfix now: they pigeon-hole teams into turtling or relying on luck/RNG.
E. A "stale" meta-game isn't necessarily a bad thing - the rules of baseball, and the ways it's played, are basically the same as they've been since the 60's, and as far as I know the sport is still kicking along just fine. It also helps viewers understand the game because things aren't completely wacky for no particular reason.