yeah, im not a DFRPG player, but my DnD group will need to have that discussion. Basically were outlawing Chaotic Evil and really having to enforce rules like "thou shalt not kill everyone and take thier money just because you can.  That is not how your alignment works" as with the angel, you could make him a KotC that gains Soulfire and ends up becoming the ultimate paladin idea.  Combine Shiro's skill with Micheal's depth of faith.

I think i could have my own avatar within my first few days. . but then my posting graph was insane.

it doesnt state that, but i assume that would be a price due to magic's effect on modern tech.  Powered armour like iron man is considered modern tech.

Would it still be overpowered if it was the end of the line goal of lesser feats/   That way you build up to it and thus face other creatures who's powers make the World Walker neseccary

It may not be a big deal with the lesser Wylde fae such as the Welsh fae, as it is with the Higher powers.

*coughcoughmalazanbookofthefallencough*

I don't mind doing the new races in S&H Fantasy as long as they work in the world.  As Kali said, beings made entirely of salt doesn't work, unless salt is something entirely different.  Look at Dungeons and Dragons, there are tons of races, some old, some new, and some old ones with some plastic sugery.  In the end, it all works.