The ease of use - once you have some videos uploaded to your account, it's easy enough for anyone else in an office/group setting with limited technical knowledge (such as myself) or even just someone who wants something simple that they can share without having much experience themselves! It doesn't support any other formats than mp4 right now but I don’t think this will be too difficult if need arises because there are plugins available through wordpress which could convert most file types into MP3 format easily so we're good until then at least :) If nothing comes up soon i'm sure others may want these features sooner rather later though :).
Easy way around uploading large files by using multiple smaller ones eases my mind when doing things like presentations etc since people tend not usually download them all before viewing anyway hence why larger uploads would make sense here ;).