"I still think a good chunk of it is they didn't have a good Hedwig secured in time for after Taye. I mean, if you had a Justin Timberlake on deck, you would suffer through Taye's box office (which was seemingly covering costs, so far, btw)"
They might not have had a Justin Timberlake, but there could've been some very great options. Darren and Taye were both a departure from the types that proceeded them. They were both gambles. After the gamble on Taye didn't work out how could they be sure the next guy would?