So to be clear, he's saying that his first game, that we've been supporting for the past couple years or so, is a buggy mess, and his solution for this is to comletely abandon it right in the middle of the game, and then and move on to a different game. And on top this, in order to understand the new game, you have to play the buggy mess, becaue the new game is a continuation?
Seems like the proper thing to do here is a tech refresh. Either fix the original, or take what what he's learned, as well as the assets (the renders and such already being done) and remake it, and then continue it from there. Basically what Summertime Saga and Friends Indeed are doing (except that it would take a lot less time in this case, as the game is noteably less complicated).