With the phone decease going all over the world like it are, a mobile version would probably sell well.
Several in my family don't even have a PC, and cant see why they should have one when they have a smartphone.
My video editing suite, also have a phone version that come with the bundle for PC.
But due to me having a intense dislike for phones it is of course not something i am ever going to use, i am not a "i have just made this video, and i just have to post it now" kind of guy.
And even if i was that sick, i would just post the raw video and not bother to edit it, cuz i dont mind to admit i am often a lazy old bastard.