There are a fair few of us on here who have benefited through the scheme, but I reckon you'd be hard pressed to find someone who agreed that the system was either fair or could not be improved.
On the plus side, there are more bikes in circulation and probably more bikes riding them as a result of the scheme.
On the downside, the 40% tax payers get most benefit (again), and there is the potential for the higher demand to push up the price of some bikes in some price ranges.
So what would should be changed?
1. I'd restrict the savings to the equivalent of basic rate tax + vat;
2. Limit the ability to buy bikes which are not suited to communting (unless a good reason can be provided) e.g. full sus MTB bikes; and
3. Remove VAT from all bikes to everyone;
Whaddya think?