Beautiful!! How about schemes for New York Airways, either operating on their own or as an affiliate of Pan Am (see the 1/100 Tamiya KV-107-II box - suitable scans can be supplied if needed, though I believe they can also be found online - or google images for New York Airways Helicopters and see other schemes on other helicopters, the Piasecki one, see below, would look especially sharp on a V-22) or, and this would need a touch of research, a Chicago Helicopter Airways (they are known to have flown S-55's, S-58's, and S-61L's) scheme.
Piasecki scheme:

I like the changes in the windows, something that would be needed for a civil transport. Just as a thought for those considering modeling one of these in plastic, convert the rear ramp to a set of steps for the passengers, that would likely work better than using the crew entry just aft of the cockpit.