No clue about what happened with @magic.dice, but it is not hard to trust you that he was a scammer.
Most done by Bots running scripts.
Disagree on this one. Bots should only be feasible if you can win longterm. Which usually is not the case with gambling.
How about trying a different approach?
If you see some good elements within a new gambling dapp (like the graphics and setting in this one), tell the devs that you dislike gambling dapps very much but would like to see a different game using their strenghts.
Actually: @taverngames this is what I would suggest to the tavern as well: Hurry up and push the gambling games into the dark and shabby corner of the tavern and fascinate the players with different types of games :)
(btw. easy to say, as I already know that this is the plan of Thamrog, the Dwarf ;-))