Thank you for this feedback. If I understand you correctly you want the Upload control to easy support a check if a user has been selected AND uploaded at least one file? Can you elaborate a little bit so we can write down your feature request correctly.
the Telerik team
Do you want to have your say when we set our development plans? Do you want to know when a feature you care about is added or when a bug fixed? Explore the Telerik Public Issue Tracking
system and vote to affect the priority of the items