My tuppenceworth, without delving too deeply into the historics of the thing, is that we now reap what has been sown, irrespective of the political persuasion of those (currently and previously) in power who created the legislation/laws that allowed the adaptation of the expenses guidelines.
Political situations are almost invariably perceived as the fault of the currently governing party, irrespective of the actual parentage of the legislation.
For years, there was no counter to Margaret Thatcher (Dennis Foote, anyone??) and I feel that this imbalance still remains.
Yes, the incumbent was non elected but I also feel that he is the fall guy for Tony Blairs 'crest of a wave' politicking, leaving the flotsam and jetsum for others to wade through. I remain undecided as to whether its better to leap to an alternate or keep the devil we currently know but not neccessarily love....
I think he may well give the current system a gutting in order to keep his own status intact, as far as possible...