This assumes Apple can get their iCloud working properly. I've avoided pings from them in the past because their is no leadership in this area. ICloud has been a failure for multiple years.
I'm not comparing management, but iCloud reminds me of the non-dropcam part of Nest - basically unable to deliver.
I've been contacted by both for roles and just think why would one want to be part of a dysfunctional after thought?
I agree that the iCloud brand has generally been a failure. Does anyone ever proudly use their @icloud.com address anywhere? MobileMe is considered an embarrassing failure by many, but I still see @me.com email addresses from time to time.
But technically, iCloud is not really one "thing". iCal, Reminders, Notes and Photos work pretty well, whereas iCloud Core Data is an unsalvageable afterthought. Working on some parts might still be fun.