CrayboffWhat I mean is by the game isn't altered from regular gameplay is that competitive and casual play is similar and consistent. When new weapons are added, you have to try to adapt the scene to those new weapons if possible. I'm not saying every single weapon should be whitelisted, but the scene should allow for the game to move in that direction instead of vehemently trying to stick to "pure" gameplay.
You're missing the point that pub TF2 is and has always been a random and mindless gamemode in comparison to the pub versions of more popular e-sports, ruining any hope of consistency between competitive and public modes in this game from the very beginning. Pub League/Dota and CS:GO are miles ahead of pub TF2 in complexity, structure and competitive appeal.
If you understand that, then you will understand why everyone who sees the competitive appeal in 6v6 or Highlander is against bringing in more elements of play from pub TF2. By doing so it would sacrifice the game's competitive structure and appeal for the more casual crowd who already prefer to play the game in its random and mindless format. It's a lose-lose situation if we sell out the game to pub players because what allowed the game to remain inherently competitive isn't there anymore.
Highlander is the best in-between we have with a lot of room for skill and strategy that still has some pub resemblance and that's as far as we can go. Of course the only way around this issue is to make competitive TF2 the new pub TF2 instead of vice versa, but because TF2 makes money off things unrelated to our competitive scene that will never happen.