nobody know all of the game mechanic yet..........

Its just for fun, no reason to tell them to stop. People are just getting excited, and thats what Riot wants

We have a gist of the mechanics...

Capture points across a wide map = high mobility champions shine.

Mostly PVP = Assassins and Carrys shine a bit, but squishy champions are going to suffer a bit.

Very spread out fights (Probably going to have 3v3 at top and 2v2 at bottom, or maybe 2v2, 2v2 with a wander champion for backdoor) = TF and Pantheon will shine, but pure tanks won't be soaking up alot of damahe.

There's a variety of things we can already assume based on the information we have so far, so it's not like it's impossible.