What Daniel has said before is that only a handful of players benefited from the bonus at the expense of all other players that ignored it. We haven't thought about bringing it back, but maybe some kind of bonus could work if it's the casino that pays for it.
Allow me to disagree with you on this : I think all the players undergo a certain house edge but some of them who play paying attention to other players' behaviour, might lower their house edge benefiting of the bonus feature; but maybe you can refute my assertion in a mathematical way considering your background.
Furthemore, from a "marketing" point of view, bonus feature can differentiate Moneypot from basically all their competitors and it also introduce a "social" aspect in the game due to the fact that one's winnings are in some way influenced by one's own behavior in relation to that of others.