Poor Dewgong. I absolutely love their typing combination but their stats are appalling and they don't have much to show. I can only hope an Alola form would be able to fix their faults.
I actually feel bad for Dewgong, because like you said they suffer from terrible stats. While I feel they're likely not getting an Alolan Form, I feel it could be a good way to give it attention again. Alolan Forms did at least give Raichu spotlight again, so why not give it to another underappreciated Pokemon?