That was February 8. Three months puts us at May 8. The Maloofs have an NBA deadline of April 18. So maybe it's not possible to get this kind of study done, which was to diagnose the viability of the proposal over a 20 year period, in less than 90 days. But what do they have so far?
Given that Taylor/ICON is essentially doing this proposal pro bono, and any viable plan is pretty much going to require that the Kings stay, it would seem to me that they would be arranging a meeting with the Maloofs for sometime within the next week or so to start their pitch. Something to say "look, if you stay, we can make this work. If you give Sacramento another year, this is the best chance you have to get a new state of the art arena, and we're working on a way to include the $77 million in the plans." Their study might not entirely complete and signed off on by city officials by April 18, but they should be able to get 85% of the way there, and have something with some substance to show the Maloofs and the NBA.
You've stated yourself that you see this as the best chance Sacramento has ever had to get a deal done and keep the Kings. If that's really true, if Taylor can actually deliver, he better have some sort of pitch ready for the Maloofs. And he better be all over the media making it clear to everyone that he wants to sit down with them. Then, if the Maloofs blow him off, you'll have plenty of reason to hate them, because it will be clear that they had already given up on staying. But if he doesn't push for that meeting at all, then I'll wonder whether his group was really able to put something together that had a reasonable chance of getting done, in which case what difference does it make if you wait another year?