I'm not that excited about Hamill and possibly Conroy playing those roles. It is the "safe" choice, but at this point I'm tired of them and their fanboys. TDKR was so refreshing because they used different actors, and it worked. The Killing Joke is one of my favorite stories, and the last thing I want is to be reminded of the animated series when I'm watching a movie that has nothing to do with that show. I'm sure Hamill will be fine, but he'll just do the same old shtick he's been doing for 20+ years, when they could get someone new, fresh, with no baggage. In stead of TKJ, it's just going to be the animated series 2.0.
It's not bad, and I do like Hamill, but he's not the only one who can play that role. If he delivers the lines like this, I won't mind it too much, I guess.