Okay, it finally downloaded.
The first thing most people will probably do is switch L and R as they seem mapped weird to me by default.
The port's pretty in person, though obviously not as gorgeous as the console versions. It's definitely a step up from MK9. It also seems to run fine, though I'd have to test some more to see if there are horrible frame drops during more hectic stuff on complicated stages.
Sound quality is great with no obnoxiously annoying compression, thank goodness.
Loading between fights is maybe a couple seconds longer than loading on console, while loading to character select seems to take just ever so slightly longer than it should.
Very, very pleased so far!