This was said before, but it'd actually be easy to build this max bet system mathematically, and only a little more difficult UI-wise, but not significantly more difficult than the current UI. The biggest UI challenge would be the expression of the size of the house bankroll, as it would have to be tiered, which would be ugly.

If we move to this model, I would eventually like to see a two basket approach like Betterment, where you can invest a proportion of your investment at a lower level and a smaller proportion of your investment at a (much) higher level. More coding, but still not much more work. The site already has two "baskets;" a gambling wallet and an investment. This would be just breaking the investment number up one more time.