I see two critical factors:
The Government and its departments will be history come May 2010 - that's only 7 months away.
The Conservatives policy is that any accredited installation will be paid for the electricity it generates.
That had occurred to me too. FITs (at present) due to start from 1st April 2010, presumably so we don't get stuck into another ROC year. Change of government expected around then, or a little afterwards.
As well as commenting on the proposals to DECC, I've emailed my (Conservative) MP with my comments, and pointing out that a new Conservative government might not want to find itself lumbered with ill-thought-out law. He's heard quite a lot about my solar panels already: first about planning permission (which was still an obstacle when I got them); then about OFGEM taking more than 1 year to accredit my installation. He certainly gave OFGEM a kick up the backside - got a letter back from the Director (or such-like) apologising for delays etc., and the system was accrediated shortly afterwards. Someone said it costs OFGEM hundreds of pounds a year to administer each small generator - no wonder if it takes them so long to push the paper around.
I still find it hard to imagine that the FITs proposals stand any chance at all of having all their problems ironed out and still making it into law well in time for 1st April 2010.