It was a good arc, but definitely not one of the show's best. The first two episodes stand out as the best of the four to me as they just felt much tighter. Anakin and Rex are standouts throughout the arc, but the biggest problem for me is that the Bad Batch themselves never amount to more than their most basic archetypes and that Echo's recovery feels like it's on fast forward with meatier material left on the table. Still, it was fun, I liked it on the whole and it's nice to have the show back even for a limited time.