TF2 is fun, and I'm still glad I bought it for $5 a couple years ago.
I don't spend cash in their stupid store, and I still have all the shiny hats and weapons I want, because it's not that hard to play to get the unlocks and craft the stuff you want.
And yea, the new weapons aren't that OP, the only thing Valve screwed up was the set based items that needed hats for the full effect, and even then, only the spy set is really any good.
I still run 'vanilla' loadouts on quite a few of my classes. Scout & Soldier (well, I did give him the little energy pistol recently because a friend got me an unlock code for it from comic con, but I usually use the shotgun) for sure, and other classes I use the stock weapons + maybe one unlock, like the demoman, where I usually use the regular grenade launcher + the sticky launcher, but I use the caber for melee weapon choice because exploding and taking 3 people with you is awesome.