With Kevin Garnett headed for knee surgery, key bench players Glen Davis and Leon Powe headed for free agency, and Paul Pierce (going on 34) and Ray Allen (going on 35) another year older, it's fair to question whether we've seen the best of this Celtics team. The biggest question going forward is how Danny Ainge and the front office will restock for next season. The team needs another big man and backup point guard for starters.