I agree that Tetu and Zenzie can be salvaged. They are on the brink of ruin though given how ishty Coates has treated them and having them be so finicky with their beliefs in the worst ways.
The MA I given zero cares about, they can go into limbo. They aren't interesting at all, they bring nothing to the table, they have no conviction, and their design is wack. Coates basically tripped the DM and replaced them with the MA. They just aren't interesting. The HZ and DM are superior in every aspect from design to fighting style