The Source engine isn't the limitation - look what's being done with the Dear Esther mod. I honestly think Valve has been innovating the experience rather than the technical aspects, and I think they've been spectacularly successful.
They definitely aren't offering GPU smashing visuals.
It just seems to me like the only devs taking risks or moving things forward are small/new developers trying to make a name for themselves. Everyone else is content to deliver the same old over and over again. Even valve is doing that, they are making DOTA on source, and all it is getting is a graphical overhaul, No new maps/items/heros or balance tweaks. It is an exact copy of the original game, just on source. I mean come on.
Edited by Vhati - 5/26/11 at 1:12pm