They raised a piddling $860k on Kickstarter and decided to go full steam ahead making a full-featured action-RPG. And over the course of four years apparently never considered dramatically reversing course (like the System Shock 1 remake devs did once they realized they were in over their heads). That's not "conservative".
Question is, what would have been the backup-plan? The SS1 remake was supposed to be just that - a remake of SS1, until the devs decided that their original project was beneath them and they wanted to do more than that. And luckily they have gone back to the original plan now (even though they had to learn the hard way).
But here, what else could they have done? The game is already pretty bare-bones, as far as I can tell. Barring large amounts of additional funds, the only other option would have been to make a full stop and admit defeat (although that might have been the cleaner and more sensible option, I guess).
By the way, I've read a few times now, that several members of the team left over the years. Which ones, and is anything known about the details?