I think it's the fairest approach to try separate these groups of players, I'm just trying to find the smoothest way to do it. One thing I'm experimenting now with is a special PvP variant of bustabit with high bonuses, starting from 0.9x and being 0% house edge. And to limit the unbounded risk of offering a 0% house edge game, if the net profit is < 0, there will be a small rake. (e.g. if the game loses 20 BTC, there will be a 0.1% rake, or 100 BTC and a 1% rake etc. )
A small rake is foreseen anyway not significant. Maybe Ryan is going to offer this PvP game like an addon to the main game ( traditional one).
If it was at me I wouldn't change a single aspect of the actual bustabit and still don't understand why it is going to be changed: I could be wrong but I guess it is the most successful game in bitcoin gambling industry just the way it is now.