A lot of you fail to understand or consider that perhaps there was no trade to be made that the Cavs wanted?
There was a good interview with Danny Ferry the day after the trade deadline where he discussed their activity, and a big piece of what he said was "a lot of the names you heard weren't available". Just because you read something from a "source" on HoopsHype, RealGM, etc. doesn't mean it's a possibility.
They weren't going to sign someone just because, and the reasoning that if the Cavs don't win it this year LeBron is gone is a joke - he still has next season in a Cavs uniform, which means they can use Wally's contract this summer.
As for losing Ben, it's really just a loss of some on-then-off defense and a new rotation to get used to. We'll see how the likes of JJ Hickson, Andy & Darnell Jackson step up.