Offer additional storage for one time price rather than a monthly subscription
There should be additional amounts of storage, perhaps in increments of 10 GB, for fixed, one time costs. Not everyone wants to pay monthly and for me, now I am no longer using OneDrive (which I love) because I can get 100 GB free from other providers or go pay a "lifetime" cost for 1TB of storage. If one drive offered this, I think there would be a lot more users.
