The power creep is pretty intense, yeah. Necrons are unkillable with guns that can kill anything, the Eldar can get anywhere in no time flat and kill anything... etc. I'd cede your point about Daemonkin... if my "free" Bloodthirsters didn't a) cost half my army being dead, first and b) take two turns after DSing in swooping to be able to do anything.
What my emotions are basically boiling down to: sorry Eldar players, you still have the best units in the game controlling every single phase of the game, so people are still going to give you shit when you unpack your army and put it on the table. The bitching and moaning every time you bring your army is still going to continue, because getting tabled causes bitching and moaning.
What sphinx of plascrete and adamantium bashed open their skulls and ate up their brains and imagination? Imperator! Imperator!