Oh wow..
Psion, what an example..an appendix stat block..wow...i'm referring to actual RULES here. No d20 work i've seen really comes close in terms of creating consistent, workable, BALANCED rules. Your bias against high-level gaming, which has been the major area of support from Wotc this year, seems to show itself yet again(ex: your irrational gripes with the ELH). Point to a MAJOR rules hickup from Wotc that is comparable to those you would find in any given d20 book, even the better ones...
In summary, 3rd parties tend to be big on ambition, which is easy, and short on implementation, where the true talent and hard, 'grunt' work comes into play...
Though, perhaps i'm framing it incorrectly..it might not be so much a bias against high levels as a more pernicious streak i see in the rhetoric on these boards from time to time: a bias against player-focused GAME info and dm fudge aids, the former of which Wotc supports, the latter not so much. It isn't what your players will see that matters to this type of dm, but rather the need to stroke their own imagination with redundant cliched and/or pretensious fluff text.
Just a rant, i could be wrong...