He basically coached 3 teams. Fox team, Zach team, and then an injury riddled team to finish the season. He lost a big assistant as well. If they add the correct assistants I think he'll be fine if the team has the summer to install an offense, learn to play together, etc. It's clear Zach and Domas were still figuring each other out and then both had some struggles, Zach with his personal issue and Domas getting hurt. Too early to say definitively that he isn't the guy, imho.
Besides if we tear down the team at the break, he's the sort of coach that's ideal for a rebuild.