@Overly Serious I feel bad for not putting as detailed a post together
Apparently HBO Max have put in a request for a Dead Boy Detectives pilot, though those specific actors are not confirmed yet. Given Doom Patrol's initial Titans appearance which was unrelated to the DP series it seems like it's got potential even without continuing from their sneak peek here. My worry, especially with the remark about Death being attractive, is attempts to forge a Gaimen verse with the upcoming Sandman series. That said I believe the companies involved are sufficiently disconnected that it is unlikely.
Brief as it has been so far Mallah and the Brain are great. And Gargauax fitted into the same vein as they did in the tone of his scenes. I think had that been used throughout the season it would have worn out quickly but in the doses we have had it works.
Jane's mellowed a lot from the first season and Cliff is the ideal punching bag, be it physical or emotional, to show it off. A fresh dose of misery for both Cliff and Victor is always welcome which the season provides and I continue to be impressed by how Rita's performance is handled. Larry I feel sorry for because he has much more low key stuff and continues to be saddled with the burden of acting through a face full of bandages (and before anyone points to the Mandalorian that character is the focus of the show, not one amongst several).
Michelle Gomez' best line was probably the spiteful barb after the entire team was vastly unhelpful towards her. While she's got elements of the default personality type she is dumped with there's a lot of scenes (that and the dance one being some of those) where she lets a different character aspect or two shine through that work well. Her and Mark Shepherd also made a nice pair and a good contrast to the rest of the team's problems that episode.
I honestly don't think you could weave them in well for crossovers. It's like teams such as Shadowpact or even Lord forbid Nextwave. The tonal difference is vast and they just do not fit. That said if I was going to do a crossover I'd ensure for a Stargirl one that Cliff's voicebox was damaged because that's the only way you're going to get his average dialogue into Stargirl's rating.