Going into BCS, my main concern was that they could harm the integrity of BB by expanding on BB characters pasts. For example, they originally considered the idea of a Saul spin-off that would be more of a comedy based show. That would have been a disaster IMO, for both BCS and BB.

So far, they seem to be accurate with the BB characters. Will see as we get more Gus in S4. Mike and Hector have been OK. Lydia's limited scenes have been interesting - except find myself more focused on seeing if her character acting fits versus the actual scene (her voice is a bit odd, as she's from Scotland). And McKean's acting's been good - especially the "You're not a real lawyer" and "the cross examination Chicanery" scenes.

Interested to see how far they continue to intertwine into BB next season. Tuco's in jail, so perhaps they'll have a scene where he meets up with Skinny Pete (they were in jail together per BB) and even Hank could show up, since we know Crazy 8 was an informant of his. And expecting the return of Hector's bell next season - Ding, Ding, Ding...