That's considered good enough to replace LeBron?
Sure he's has had a lot of luck(Whiteside, Winslow falling to 10) when a bulk of his moves could've easily backfired(not tanking but maxing out Bosh, and trading future firsts for Dragic), but I'll give credit where credit is due.
Signed Deng to a 2 yr deal(he could've easily went full retard and tried to Max out Bledsoe last summer)
Signing Whiteside to a 2 yr deal(sure WS fell into his lap, but many GM's would of gave him a 1 yr deal as opposed to a 2 yr deal).
Gerald Green for a 1 yr deal.
Coaching and perimeter defense will be this teams downfall, but even with that in mind, the Heat are still contenders in the East. Sure Miami isn't a lock to make the ECF, but they still have a legit shot at making the Finals, and that's nothing to scoff at after losing the best player in the world.