But the fact several other villains have had costumes changed somewhat for the silver screen: Magneto, Dr. Octopus, Whiplash and Scarecrow being prime examples.
So there is a precedent of changing a villains costume to make it work onscreen in a super hero movie.
Again if the comic book costume works on screen, there is no problem, if it doesn't there is a problem and you retain the spirit of the costume while changing it work on screen, that can be a tall order, sometimes.
But if Mirror Master is more or less the main villain of the piece and the other rogues don't take him seriously, how is the audience supposed take him seriously?
That's the problem with using the Rogues as a group, is the film needs a Big bad and if try to focus on too many rogues at once the Rogues as a group they will be too confused and diluted to be the big Bad, but if focus on MM and then have the others make jokes at his expense he loses some creditability as the big bad.
Ultimately I guess the question who would be the Big Bad of a Flash movie.
I'm trying to figure out what you think we're disagreeing about in regards to costumes.
I think it's perfectly alright to reinvent the costumes if you have a better idea. With the only caveat that they have to look cohesive with the rest of the cast. If the new costume looks like it stepped out of The Matrix and the rest don't, then back to the drawing board.
I'm having a tough time just imagining what a new Mirror Master costume would be like though. Not because I'm particularly attached, it's generic supervillain 101, but because it's a non-obvious theme. Look back a couple of pages at that Flash Rogues cover I put up, and anyone could pick out Captain Cold, Heat Wave, Captain Boomerang, and Pied Piper if all they were told were the names. Weather Wizard at least has the wand thing going for him. (Gorilla Grodd (for obvious reasons), Abra Kadabra, and Reverse Flash are equally obvious.) Mirror Master really only has his mirror weapons that are distinctive.
As for someone making a crack at the expense of the villain, hey heroes do that all the time and the villain still is presented as a formidible foe. And if a fellow Rogue does it, well, payback's a ***** when the opportunity presents itself.
As for the Big Bad Rogue, I'd fit Mirror Master for that role. The power makes him the trickiest to overcome and gives him the opportunity to escape from Flash a couple of times, building up a rivalry. Even allowing them to interact a little without him being whisked off instantly to jail. If you're using Barry, MM is ideal for a locked room mystery setup, which is a classic DC thing, and would bring forensics/detective work into play. Heck, Identity Crisis boiled down to a locked room mystery. And, if you want the cathartic, kill the villain, send off, you'll probably avoid complaining fanboys if you use Scudder.