With a bit of crayoning we could resolve that!
On post 57 in the thread 'How could you build extra platforms at York' posted by a Meerkat on the 29th September last year (2020)
https://www.railforums.co.uk/threads/how-could-you-build-extra-platforms-at-york.209665/page-2
I did suggest based on someone else idea, of creating a new chord connecting the Harrogate line to the Scarborough line adjacent to the outer York ring road! Mainly to avoid conflict with ECML services and allow the bay platforms in the main train shed to be made into 2 new through platforms, this idea would also allow a new station at Clifton Moor.
If this was done then if you wanted you could add a further shorter chord to allow some services to head straight to Scarborough bypassing York, that way Leeds services could still have a direct service to Scarborough via Harrogate.
Alternatively just put one chord in and run into the Scarborough platforms and then back out!
Obviously the remainder of the Harrogate line between Harrogate & York would have to be upgraded as I believe its limited to 2tph at the moment.