You should be scared, they have like 14 players thatd be rotation players on any team. Getting Deng would be nice for them for a year or two, but then a lot of the backups who arent getting as many minutes may bolt like you mentioned, but then again who cares when your lineup is Bayless/Roy/Deng/Aldridge/Oden. Thats insane. I think theyd be fine at the backup big positions with Frye/Pryz not commanding that many minutes anyway, but keeping Outlaw/Fernandez/both may be tough with Roy/Deng starting and taking a lot of the minutes.
Its unlikely to happen anyway so their lineup now is balanced as is and guys should get the minutes they want/deserve...for now. I expect a playoff birth this upcoming season.