Honestly if I was them i'd stop releasing updates and just ditch the old shit codebase and create the remake, do weekly posts about what each dev has been up to that week and maybe even new art here and there. While they're at it they can do polls about features or stuff they're about to work on and then make changes people want if they think its good.
Honestly if they stop releasing a game that they never actually release properly anyway they wont lose that many patrons, especially with updates on the remake, polls and art.
Knowing when to quit is smart, quit working on the shit code-base and go fresh. Hell if they need more devs i'd lend a hand