Hi Bihor!
I haven't tried to adapt anything specifically but we did have a Duskblade and a Beguiler in some of our playtests, although we didn't change much other than the spellcasting mechanic.
My gut feeling is that some of the classes in the later 3ed books will be a bit more "Trailblazed" already, especially the melee-focus classes. To over-simplify our design goals, we tried to give the core melee classes more "cool stuff" while toning down the full casters.
Is there a class in particular you are interested in? If so, I could take a look.