It would be really cool to be able to choose to skip an update on an app to have it stop notifying you that updates are available. I've found that sometimes it marks newly uploaded demoes or other files as updates that will overwrite the current version if installed. So currently when that is the case it sends notifications that updates are available forever so long as you ignore the update.
It's not a vital feature by any means but it would be a lovely quality of life change.