Good post. Spot on.
My surprise in all this is that incumbent operators haven't done better so far. To my simple mind they will have many fewer unknown unknowns than other operators.
For example if Stagecoach lose Hyde Rd, the incoming operator may not get as many staff TUPEing across than they anticipated because the staff may prefer to transfer to another Stagecoach garage rather than work for someone else, particularly if they are long serving.
It's going to be interesting; has TfGM set formal or informal market share ceilings I wonder? They've certainly made an effort to attract smaller operators.
The incumbent having fewer unknowns is only an advantage if other bidders are conservative with the costs of these unknowns. If someone underbids it doesn't matter if others know it can't be done at that price, they still win the contract.
Tbh, with franchising in Manchester being so new and the big all or nothing contract awards potentially encouraging risky bids to avoid missing out entirely, I wouldn't be surprised if someone does win by getting the sums completely wrong and ends up losing loads of money and/or trying to hand the franchise back.
Based on what I've heard (and my own speculation) I would predict that Hyde Rd will stay with Stagecoach. Hyde Road depot is very close to Piccadilly, which Stagecoach will be keen to keep. With regards to Ashton, I would also imagine Stagecoach to keep. Sharston and Wythenshawe, however, I predict First to bid for. It would be logical for them to take over the whole Wythenshawe and Airport area, giving them a large area again in Manchester. Stockport is an interesting one. Possibly Go-Ahead, but another operator who isn't currently operating in Manchester could fancy their chances?
Maybe Tranche 3, as the largest, will be different, but so far all the large depots in each Tranche have gone to the same operator. If all the bids are going in together it makes sense that operators will use the same cost assumptions for all of them, so whoever has the lowest bid for one will probably have the lowest bid for all. There aren't really any advantages to incumbency or much reason to think any operator particularly wants a specific depot. I suppose maybe a smaller operator like Diamond might not want to win the whole of Tranche 3 in one go.