Ahh but you see, if that's the case it'll mean about 18 new weapons that are only obtainable through random drops or items traded/crafted that are also found through random drops. On top of that a closed test of 50-200 people can come nowhere near the trials of 100k+ active players.
However, I would be perfectly fine with all of this if Valve added a server-side command to simply disable the use of the backpack. A true "vanilla" TF2 experience. As long as I had the choice to not deal with sandmen, crit-colas, direct hits, arrows, back-burners, razorbacks, hats, medals, etc. etc. etc.... I would be perfectly content and willing to have loads of new unique weapons added.
tf_vanilla_enable 1
//Disables use of items carried by backpack.