As part of Cakewalk's service they could bundle an online playback site, like SoundCloud etc.  But free.  As long as you keep up your subscription you can use it.  Publish right to the site, like SC.  They should be able to do that cheap.  And run Gibson adds along the side so all of Cakewalk users' friends get to see the add ;-)
 
A paying proposition could add automatic cloud backup.  Most pros among use already have some kind of backup, but there are plenty of users (including moi) who would love (and pay) to directly back up to the cloud from home any song we are working on when we get finished.  Of course, save it to drive E: but include a one click option to save copy to the Cake Cloud.
 
They could even add bonus space for TASCAM users.