If 0.75% is the kelly, are you not worried that double that might be too high? The bankroll just lost over 200 btc to a player running 2 accounts to repeatedly hit that combined 1.5%.
Just for some background, twice the kelly isn't totally arbitrary. The kelly is the point in which your expected bankroll growth is maximized, risky any more passed that means you are over-risking funds and have less expected growth (but more expected profit). Once you get to 2x the kelly, your expected bankroll growth is 0. Anything passed that point puts you in negative expected bankroll growth (basically guaranteeing the house will bust if it's constantly being used).
At least historically on bustabit, when there was a whale playing trying to hit max profit it was almost on a single account and they were the only one. The new system is designed to allow them to do that, without affecting anyone else (i.e. a single account can't ever force everyone to cash out) -- however if there's multiple accounts aiming at max profit like we saw yesterday, it kind of backfires a little.
Honestly, I think what bustabit really needs is a bigger bankroll at the moment.
