My first thoughts come after reading the comments about it on Slashdot. Some people objecting to these new forms - and notice this was on a major technology-related site, so we're not exactly talking about luddites here - was due to the fact this is online at all. Someone specifically mentioned the state of old character sheets, for instance, and how much they value them after they've been erased and re-written over years, how you could tell a character's age by the state of the sheet, etc.
It just reminded me a lot of people objecting to ebook readers because it doesn't feel and smell the same. I mean I guess I get it? But... that's nostalgia, something very subjective; a kid starting D&D today wouldn't give a shit if they don't get to use a paper character sheet, all other things being equal.
More reasonable objections can be raised about the loss of camaraderie around the table. Now that I can get into, since even assuming the players are physically present but just using their phones/tablets to keep track of the action there's something very distracting about the devices even being there (and yes guys who spend half the session looking at/pointing out youtube videos are literally the worst).
But, and this isn't irrelevant to MU* either, catching new players is probably much easier if some of the record-keeping and footwork can be made nice and become automated, at least optionally; a nice graphical GUI like in games can go a long way into turning some of those filthy casuals into RPG hobbyists. 
Some of you will grumble at me for saying so, but if they could even largely automate or at least speed up combat I'd be grateful.
And of course, the distance factor. Some of us just don't have RL gamer-friends willing to play, so something has to give. The more tools we have out there to play online campaigns (and I know there are several onlne) the better.