I mean, it's not like an actor every did a role using a foreign accent, or even won an award for doing so. I mean, for crying out loud, people have actually been so good at it, people didn't even know they weren't of the nationality who's accent they were using.
That doesn't mean RDJ does an accent, but, like with most things - i'll reserve judgement until I actually see what they do.
Go back 20 years even, people were offended, pissed off, and outraged because they had the audacity to cast a 6'2 guy as wolverine. Seeing as he'll play the role 'til he's 90', i think that worked out OK.
I mean, the literal definition of actor is 'pretending to be someone else'....considering they guy is actually a great actor, maybe he and the writing staff deserve a shot before it's written off.
Seems like any time a new movie is announced anymore, people need to trash it for one reason or another before a single scene is shot. I get things may not seem like they'll work for some people. That's fine, but I guarantee those people have been very wrong about these things before as well as probably being right before. I'm not saying this will result in Endgame level work either, but i've called a bust before only to see the show become one of the most loved things ever...Just emphasizes the fact to wait for the product before trashing it.