Nah, Matt Ryan has supplanted Keanue Reeves as Actor Who Should Be Playing Constantine In A Live-Action Movie.

I am not trans, so take my opinion with the requisite grain of salt, but I doubt anyone would have been offended if they had just used a cis woman to dub her voice. I feel like the target is “a voice actor who sounds like the original actor” so the ideal is probably another trans woman, but .... definitely not a cis…

It would have been the biggest troll if they only had Flash cameo for a few seconds with him shouting, throu static and bright lights, “LOIS IS THE KEY! YOU WERE RIGHT ABOUT HIM! IVE COME TOO EARLY!” then disappearing. Super girl wonders "what was that all about?" She shrugs and thus resumes another typical Supergirl…