I skimmed chad the other day. There's very little to it (by design). afaics you should be able to replicate what chad does by copying the chad system prompt into a SYSTEM.md for Pi. Then you could use it with whatever model/provider you want.
i was steering chad in the opposite direction. one model & one set of silicon -> taken to the max. swap out your CHAD_MODEL and it still runs, you just leave the drafter and the kernels behind.
Except the "one model" is too small for a 64GB Mac much less 128GB, sad since the Q3 is proven less competent.
Offering a Q boost (with no leave behinds) on first run would be a bump worth some vibe coding while.