S07E01-04 - Bad Batch Arc - Unsure
You’d lose a little character dev for the Bad Batch but they’re not really the focus unless they’re getting their own show, in which case they’ll repilot anyway.
Even if they do repilot (I’m keeping my fingers crossed for the unproduced Kashyyyk arc to be bumped into the new show), they are not going to explain in great detail how did Echo end up with the Bad Batch and why he’s in the state he’s in. But then again, I hold the Citadel arch in a much higher regard than you seem to do, so I might be biased.