You have to be careful not to be pulled into this game too much. Going from 5 to 6 (Summoners) for example is pricey as hell and if your stuck in the silver league, you cant use the 2nd tier abilities.

On top of that, with the beta's now OOP, its getting expensive to level them up even the commons.

Good luck on the new set, it will either be too powerful thus we get power creep or too weak, resulting in bad sales or best of all somewhere in the middle.

I'm keeping to the beta's for now and will see what the new set is like before committing.