I completely feel that TT and AB can co-exist. As we saw yesterday, having TT play a bit of the 5 can be a good thing as he is a hustle guy who will make the opposing big work. Varejao should get a bit of a lighter workload when he returns (say 25-30 minutes per night as opposed to 34-37). Sims played 18 minutes last night, so those minutes instantly go to Andy. Take away a few minutes from Zeller (18 last night) and Andy is suddenly close to the minute production he should be getting. Having a TT/AB/AV/TZ frontcourt is good.
If we can get a better 5, then obviously things change, but that would be decided when the time comes.
I am just happy to see everyone performing. TT put up 16 and 13 last night and Bennet 19 and 10. If we can get 35 and 23 from our PFs every night, watch out (I think 30 and 17 is a better number - which is still great).