You're obviously familiar with the area and realise it's complicated. Access to the land via the Railway End would be severely restricted by existing buildings between thst end of the Stadium and Station Lane. The purchase by the previous Chairman of Millennium House on Station Lane was highly controversial for this reason, it simply does not guarantee access to the available land behind the stadium.
There are, as you say, a couple of dead ends on the recently built estate. Extending that estate will create more problems at what is already a bottleneck on Pontefract Road at the old Junction pub. Perhaps an access road further up Pontefract Road near Copley's farm could be possible, but that's pure speculation on my part.
A scenario where a solvent new company runs a rugby league club called Featherstone Rovers out of Post Office Road and someone like Wakefield Met ends up with a plot of land to develop would be absolutely fine by me. Seeing our former Chairman benefit from that would be less welcome from my perspective. Just my opinion.