I don't understand how we can get the lease for access but not for the ground?
Because the RFL Facilities Trust is a charitable organisation with similar objectives to the Whitehaven Social Centre charity, i.e. to provide recreational facilities for the community use, the Charity Commission will allow longer leases of land. Unfortunately Haven couldn't be a charity, they were (and still are) a business with shareholders and the Charity Commission will not allow long leases , in those circumstances, as it could be construed that the land is no longer being used for community use, which is why it was handed over in the first instance.
It's easy with hindsight to say that the council should have done this or that but the County Ground was used in the main by Whitehaven Amateurs and they being a Community Sports Club (which is akin to charity status) were able to get long leases and funding for improvements.
Haven being a business using the Rec were more or less on an annual lease basis and any talk of building new stands, etc, was all from the Haven club who found it difficult to get a long lease to get any worthwhile funding, for the reasons I have already stated.
The Energy Coast money came along afterwards for the Pow Beck scheme. The stadium could be a more substantial stadium IF they could get extra funding to move the artifical pitch, etc, and re-align the plans, but in the present economic climate that could prove difficult.