I’m still stuck on Diggle’s mention of moving (with family) to Metropolis. A year ago, this sort of allusion might have been a mere, fun Easter egg. Likewise, the Green Lantern tease would be harmless enough: in effect, it’s “writing a check” that everyone understands
won’t be “cashed.” But now, given the upcoming
Superman & Lois series, these details create expectations for the broader Arrowverse continuity - and for
S&L, in particular. So why go there
at all if you can’t actually “cash the check”?
Granted, it’s not impossible that Ramsey might join
S&L. But after eight seasons as a sidekick on one show, would he want to do the same on another? (And would the audience want this redux?) Even if he did transfer, it doesn’t seem likely that it could be in any “Green Lantern” capacity - given the HBO Max project.
So - again - why the tease?