Oh God. So from that image, they want to re-open Sheffield Victoria, which breaks connectivity with existing services. Fix that problem by building a 3rd station in Sheffield - which from geography would almost certainly have to be a mega-expensive tunneled station. Then they want to run a 'high speed' line along the very curvy existing line out from Victoria towards Woodhead (good luck with that). And then, further South, they have this brand new line apparently running into a dead end (unless it links to HS2 phase 2, which they say they don't want to build).
Do these guys know the first thing about railways?
The north-eastern leg from the Penistone delta junction presumably has to handle
Bradford-London (say 1-2tph)
Leeds-London (say 3tph)
Newcastle/York-London (say 3tph)
Newcastle/York-Manchester-Liverpool (say 2tph)
Newcastle/York-Manchester Airport-Liverpool (2tph)
Bradford-Manchester-Liverpool (2tph)
And
Bradford-Manchester Airport-Liverpool (2tph)
...16tph. Before weaving in the other side of the delta junction....or even wanting more than 2tph between Leeds and Manchester!
Really will require 'smart timetabling'