Do massive clans such as MYM etc, ever influence Ice-Frog's decisions, or does he make decisions indepent of all the major clans? (i understand your play style and everyone's influences him.) Question 2b) Have you personally ever influenced ice-frog to change the game, and if so how?

Yes. From what I know some of the players in MYM has made an impact on his decisions. I can't say if he had already come up with the idea before we suggested it, as he is very clever, but as an example I am fairly sure that p0c created the Roshan-camp we know today.

Personally, I suggested and convinced Icefrog of the Dagger we know today. The nerf that everyone has been complaining about. It was a long process, though, with a thorough conversation with tonnes of input from both of us finally reaching an agreement to what would work

Do you think a magnus with blink/vlad and a AM with butter etc would be a good ganking combo as they can both blink magnus stun, magnus boost am damage with skill, and both get lifesteal?

I suppose. Not exactly a cookie-cutter gank combo and they would have to wait for Reverse Polarity every time. There are tonnes of fictive gank-squads better than this, though. Imagine Lina/Lion?