Completely agree with all of your examples here - arguably none of them are fair. But providing other examples of unfair treatment doesn't justify a lack of London weighting.
And they were more competitive then. Given that in recent years they have had to compete on probably around 50-70% of the money afforded to other clubs (relatively speaking, due to London living costs), you could argue that this dispensation could have continued (however, due to the exchange rate now they wouldn't be able to get the same quality of Aussie that they managed a few years back, so they issue is probably redundant).
At the time I felt that Keighley had been dealt with very unfairly as the goal posts moved mid-season.
Unfortunately, I think that the artificial catapulting of London into SL, and the exemption from the overseas quota is probably as much has been done to give the pro game a leg up in London. To properly break in to the London market it would need millions more injecting into it.
You can't beg for money because of London being expesnive to live in on one hand and then ask for he right to bring unlimited numbers of antipodeans to the UK at great expense to live in the same uber expensive city, namely London.
Talk about wanting your cake and eating it too.