Thy Doctor said:
I would go to Lionhead and show them the original Fable. I would make them play it and realize that they had something good going on. Id tell them to stop with the "innovation" and stick with what they know works. I'd also say a few swear words to good ol' Peter.
But in all seriousness if you could really tell any game developer one thing what would it be?
I'm confused; it's an open world game, why don't you just play it again? Or will you only throw away your money if it's in a dignified manner of your choosing?
Apart from smacking Valve over the heads for Episode 3, smacking SCE Santa Monica over the heads for killing the amazing character that Kratos was at the end of GoWI, smacking Blizzard over the head for destroying people's lives, and giving big hugs out to all the great indie devs, I'd probably... idk.
Apart from some concepts I'd like to see explored by an actual developer, there isn't much. Perhaps unload my opinion on what Valve should and shouldn't do to TF2.