Crab
I am not close enough to know what the IPT think or what they are willing to give up. I was stunned to see that they went down the road of reducing cover at night around the Uk. They dictate, the companies bid - if its too expensive don't buy it or get the button pushers to trump up more cash, after all its the banks behind the bidders that need the interest.
As for your points
1. defence estates have set the prices so I expect they want their cash.
2. The offer of Valley buildings and sim space was resinded due to the fact the RAF were not in a position to vacate the buildings
3. The IPT have stated that mil pers will do a max of 3 yr tour and they are not allowed to be licenced. They have also stated that there will be no abinitio crews so the mil pers will do SAR as a respite from the joys of foreign travel.
Once preferred bidder is announced I expect that the dialogue will be more fruitful in acheiving a more capable system for the british public rather than trying to keep individual camps sacred cows happy.