I play TF2 quite a bit, and engineer is probably my class of choice, so this interests me. Although I wonder if the first level versions of the teleporter and the dipenser will have higher downtime, or the same as they did previously.
Until they add grenades, I'm still not playing this game again. I loved the original TF for Quake and TF for Half-Life was almost at good. While TF2 looks great and has some excellent features, playing an FPS without grenades is painful. And they had such great grenades in the original TF mods: frag grenades, nail grenades, napalm grenades, concussion grenades, EMP grenades, MIRV grenades. Not to mention all of the user added grenades; everything from infected syringes to flying MIRV grenades.
Worst. Decision. Ever. They can't get it to work so they just give up? Grenades were never over powered in the original game, why would they be in TF2? Oh well, I guess I'll just have to stick to COD4/5 and if I want the TF fun, I'll load up the original.