I been through battle rap fatigue before, it definitely happens.
I don't think a break necessary, they have a huge roster, and a lot of rookies that are dope. There's so many potential match ups that can but haven't happened. Battles weren't good last night, but that happens no matter how much time people have off. There's really no sweet spot where it's guaranteed to be good. I've seen classics on 3 weeks prep and terrible battles on 9 months prep.
Just think of the elite names that weren't on this event: Nitty, Twork, Roc, Verb, JJDD (Not a fan but he's a big name), Red, JC, Cortez, Daylyt, Ave, DNA, Bill Collector, Suge, Chess etc...