Doom Patrol confirmed that Flash exist in the Titans universe. And Deathstroke is also confirmed to be in the season 2 of the series.
Will they just re-use Keiynan Lonsdale's suit or just make a new one ?
I actually wonder if all the Fab Five existed in the "Titans-verse" and were a team before Dick meets up with the season 1 Titans.
Actually, with Hawk and Dove we'd probably have a close approximation to the Abnett Titans Hunt roster.
"It's too bad she won't live! But then again, who does? - Gaff Blade Runner
"In a short time, this will be a long time ago." - Werner Slow West
"One of the biggest problems in the industry is apathy right now." - Dan Didio Co-Publisher of I Wonder Why That Is Comics
It would be easy enough to introduce Wally into the CW Flash series.
Introduce him as Jay's protégé and off you go.
"My name is Wally West. I'm the fastest man alive!"
I'll try being nicer if you try being smarter.