Size means everything
Take the title however you want but i'm specifically talking about Sol here.
As blakinola has pointed out if Sol isn't big, a part of his intimidation is lost in that. Whether Riot has already thought of that or if they have not, I think many of us can agree that he needs to be pretty large.
There is only one thing I can think of to make him imposing. I'm assuming that hes going to be a AP mid laner, so with that why not make him grow in size depending on how much AP he has. Whether or not this is necessary who knows but I feel if hes not big hes not very imposing.