So that's one direction taken care of -- what about all the others that are currently easily accessible from GP? And by the way there's currently no official parking site anywhere near WHL. Easily solved? Build a big one on WHL? If that's the solution then expect a 30 minute delay getting out of it and on your way home.
Turn right out of WHP, straight into town accessing anfield and South Liverpool!
Turn left out of WHP access to East Lancs including Knowsley and motorways!
Turn right out of WHP then left up Queens Drive access most of South and East of Liverpool and motorways!
Turn right out of WHP and right onto the drive access Walton, Bootle and then all of North Sefton!
The only thing it hasn't got is a train station (yet), and as the park is on a useable line who is to say this cannot be opened in the future?
There is as much parking at WHP in and around the area as their is at GP, I don't know what your knowledge is of the area but I live there and so know the area quite well.