I'm gonna guess the second Scal leaves for good 44 is going up. It'd be kind of mean to retire a number currently in use, and I think that's the reason it isn't up there yet.
and I'd love to see a big ceremony for KG, Ray, and Paul. It's always been about them since they all came together. Another championship and I think it happens, obviously Paul is going up regardless.
Then if Doc (Or was it Danny who said this?) is right, and Rondo is a Celtic for life, I think he'll play the Paul Pierce roll for awhile after the big three leave and carry us until we can build another contender.