As one of this forums resident Bat-a-holics, I love Keaton reprising his role. Long overdue. Frankly, after The Dark Knight Trilogy, I half expected DC/Warners to do a live action movie of The Dark Knight Returns graphic novel starring Keaton (aside from the obvious that Joker appeared to have died in Batman '89). Instead we got Bat-Fleck, who as most of you know, I thought was terrible in every regard.
I've never been big on The Flash as a character. I'll see it, however, because of Keaton and Batman.
I also have to say that while I know Batman Beyond has a big following, I've never been able to really get behind anyone other than Bruce Wayne being Batman. I tried watching the series. I got a few episodes in, and it just didn't resonate. I would, however, give it a shot if it was made into some sort of standalone film with Keaton.
It seems like Reeves' "The Batman" is now regarded as a standalone series, much in the way Nolan's The Dark Knight Trilogy was. I'm very interested in how Pattison is as Bruce Wayne/Batman. But honestly, I think it does his portrayal of Batman a disservice, since everyone is going to be much more into seeing Keaton.
I can't help but think Warners is blowing it again. They had a great thing with The Dark Knight Trilogy. They blew that up to try and catch up to Marvel/Disney and all the Avengers stuff. That blew up in Warners' face. Then they do a great standalone Joker film to huge acclaim, and announce a new Batman. But then they now announce Keaton reprising his role, pretty much relegating Pattison to "the other guy playing Batman" status.
SMH.
Warners just never gets out of its own way...