I did consider randomness being an issue. No solve for this. Unfortunately this may be the downfall of this idea, as random is very important for betters.
Bots would make things very easy as they could have simple, easy to recognize/bet on names.
For ball flying into oblivion: Maybe the arena could be enclosed, at least minimalizing chance of ball being launched into the shadow realm.
The next question is this, since I'm not very familiar with the mod maker, is there a type of "collision" for win parameters? For example, ball collision with red block, player in Tori position wins, and vice versa? Although this kind of defeats the traditional roulette gameplay, as the ball is known to bounce around numbers causing those nice little heart attacks. With collision as a win parameter, unfortunately this would cause games to end as soon as a block is touched by the ball.

This might be worth me learning mod maker for.