Already been mentioned further up the thread
I do wonder whether Leeds Neville Hill might have additional capacity once the HST's leave.
This is the big unknown on the Yorkshire side. I'm yet to see that Ten Pound Walk will be capable of stabling all the 800/801/802 sets which will finish their day in Yorkshire....
Plus consideration of space for more EMUs for local services, and the new build DMUs.
A choice which hasn't yet come up in the thread is Botanic Gardens. I had a conversation with a Guard confirming they're now doing much more exam work (although I can't remember the letter off hand!) Plus depending on the stock strategy the new Northern Operator chooses, and the combination of routes, it could allow efficiency - if for instance the stock used through Hull doesn't visit Leeds in service. Worth also mentioning that the lack of Stabling in Sheffield has always been a problem...