Guys, I love Ray and KG, they have done a lot and they will still be effective, but locking them up til' they're 39? I mean it's Ray and KG so I'll be okay with it, but now we have interest in Crawford, Terry, and Rashard Lewis who are all 32+. I was kind of hoping for younger/more athletic guys to run with Rondo/Avery, but we didn't do that in the draft and it seems like we're not doing that in Free Agency.
I wrote a long post a few weeks back about how this whole "we need to get young" stuff was nonsense, because we are in fact a reasonably young team to begin with.
Yes KG and Ray are old, in NBA terms. Pierce is close to that age, but you rarely hear as many people call Kobe old as you do Pierce, and they are basically the same age.
Outside of that...who else are you worried about?
Athleticism, on the other hand, was not our issue when we played the Heat. Our problems were Rebounding and Scoring in the 4th quarter. We have made draft picks aimed at helping our Rebounding problems, and hopefully increased production from our younger reserves will let our starters rest all season so in Game 7 against the Heat next year, they don't crumble.