He didn't struggle with Brown and Lonnie, that team made the dance and probably would have been better off had Bruce not gotten hurt.
L likes to have experienced teams(Most coaches do, unless you are able to recruit like a blue blood), so he will most likely hit the portal hard for some guys(Hopefully a legit center and another PG). It's not like L is running some kind of unique system that no one can grasp, Charlie Moore figured it out. It's about making good evaluations and bringing in the right guys. People also forget that L has had a good record in regards to developing guys. I expect Wooga and Joseph to make huge strides this offseason, and into next year as their minutes increase. I also expect the incoming freshman to be solid early on, they aren't long term developmental projects. There's a lot of talent coming back, albeit a bit unproven.
I forgot about Miller, who does whatever needs to be done. He can be a scorer, he can be a role guy. Dude does a lot. He may come back next year as well.