I think that what you propose is an excellent idea. At the moment I am
matching my elements appearance against the output from IE 6, which is
what I will continue to do. I do know that IE has a number of quirks
which I will not attempt to emulate, in which case I will "do the
sensible thing" which usually means aligning with Firefox, et al.

I am very happy to host whatever you come up on the project website.

FYI my roadmap at the moment is a follows:

Fix the implementation of <ul> and <ol> - trivial
- At the moment it is the <li> tags rather than <ul>/<ol> that cause
the indentation, which is not proper HTML behaviour.

Implement the passing of arguments into tag definitions - quite easy
- Using code similar to the options parsing mechanism in the Barcode
Writer encoders

Implement tables - Very difficult to do this correctly with rowspans
and colspans, etc.

Implement remaining HTML 4 elements - fairly simple, but long winded