Despite the flurry of activity that brought Antoine Walker, Jason Williams and James Posey to Miami, though, a frosty fact hangs over the Heat: It's hard to envision Miami getting much further than it did last season, not with the Pacers back at full strength, not with the Pistons preparing to add veteran help off the bench and not with the Cavaliers having such a bang-up offseason. The Heat still has one more shot to add talent with its full midlevel exception, and how it uses that money could be a make-or-break decision.