What is with this myth that Mark/Bill were even remotely entertaining/significant? Yeah, they were nice guys and it sucked how they got out but if they'd stayed in over Kelly/Christy, the season would have been even worse.
The weird thing about this season is that there was almost an ideal boot order, at least in terms of the duller players leaving first and all the entertainment making the Final 6 - which hasn't really happened since TAR2 (since TAR12 would have been great with Ari/Staella, Kate/Pat, Marianna/Julia etc still in, assuming the sisters actually got screentime).

All the other crappy seasons could at least be blamed on the interesting/dynamic/diverse/dramatic teams leaving before the halfway point - this time they survived at least 2/3 of the way it was still pretty meh. At least TAR4/7/10 had the potential to be amazing; TAR13 is the only season that couldn't have improved all that much with a different boot order.