Thats it then, Doncaster for Super League - the district has a population of 289,000 (2001 Census, probably got another 30,000 poles since then)
Well. its not inconceivable in my opinion. Doncaster have only had about three decent seasons in the 50 years I have been following the game and in one of thiose they got promoted to the old 1st division, now SL. They were playing at decrepit Tattersfield, did not have the benefit of Sky money, and still averaged over 3,000. This was in a very bad season in which they couldn't compete and went bankrupt.
Don't forget, there was no culture of winning RL in Doncaster and this season at the top was a one off aberation.
If the costs of operating in SL were reduced as has been suggested and if Doncaster were to gradually build up a decent fan base in CC as a reult of a few good seasons there ( This next year could be a test case), then, given the size of the catchment area, the suitability of the stadium and maybe the chance of the management team attracting some cashed up investors ( are there any race horse owning restauranteurs with an interest on tax avoidance companies in the town?), then maybe they could become a suitable candidate for ticking the boxes for a SL place either via promotion or licencing.
I would bet the club in SL if they went into it from a fan base of around 2,000 could easily beat the average of the last and only Doncaster team to have a season at the top.
The town is also far enough away from the West Yorkshire heartlands to not fail the proximity test.