I think BL is definitely a part of the formula. Halfway between BL and TIU.
It’s probably worth looking at who’s working on Superman and Lois.
The talk as I understand it was that part of the Arrowverse writers were sent off to a temporary COIE writers’ room which is partly why we’re supposed to get half season plots this year.
The rumor is Bloodwork will be mostly wrapped by COIE and the back half of Flash’s season gets a new villain. There’s talk about Iris’ secret future parentage being a plot (the new showrunner flat out said he’s doing that plot) and I think we’ll get an Abra Kadabra arc adjacent to that along with whatever the post-Crisis Wells status is. (Wells as a character is poised for a big character makeover being the show’s “multiverse guy”. I expect a final new Wells who might just be Harrison Wells, no gimmick, in the new timeline).
But part of the writers left to start the S&L writers’ room. I think Sterling Gates is pretty likely to be on that team. And if we know which writers are there, we can have a sense of where the show is headed.