Well, as you can imagine, we're faced with an interesting dilemma of making the non-supporter version interesting enough to keep new users coming back, and the supporter version scaled up enough so that enough users are willing to buy supporter so that we don't go out of business :-)
We're not 100% sure how to proceed with this yet. All we can promise at this stage is that there will be no in-game advantage (that is, no better chance of winning games) for supporter teams over non-supporter, to keep the playing field fun and level.