The Cavs continue to take shots with players who had ability but have failed to play up to their talent level. At this point I think that's the best option available. Maybe they strike out. Maybe they hit the jackpot. Either way, what can they really do?
Mediocrity is the death knell of a franchise. A team can recover from being horrible by drafting well. A team can continue to be great by luring free agents. A team that's just out of the playoffs or just into the playoffs can't really improve via either method though, and like it or not, that's the position the Cavs are currently in.
They do possess a large trade exception, but I expect them to hang on to that until after next season.