I would be so down with an Equestria Girls live action, CG would have to be on key though I would also love a remake where in loo of ponyville and CGI ponies, horses were brought in with just the cutie marks CG'd on. I think it would have to be for fans, as I am presuming the horses wouldnt do much more then stand around in a foyer made to look like the castle, give each other looks with subtitles to explain what the characters are saying and do maybe the walk through the mirror scene. I would picture Twilight as a black mare with a white star on her forehead and she would take a full second in horse form, after walking through the portal before bliping into the actress. Just for the horse to look around with a "Why am I here, silly humans" expression. I really would love it to be a comedy, or even poke fun at itself and the series/fans - although I am sure some ponies would be sensitive I think if done right it could be fantastic. I would stick with comedy for live acting though, because it would be easy to make fun of not using CGI and the live horses having issues acting out our friends - then stick to Equestria High as to avoid using them for the majority of the show and still keep the spirit. Then to flop on CGI which many of us seem a little unsure on.