Hm. Well, I haven't used it/them. But I can post some impressions I got from reading the two PDFs, I guess.
The new class abilities (Disciplines?) are neat, or some of them are. There is not much to speak of regarding feats or skills. And, though it is suggested to combine Hide and Move Silently into Sneak, the same idea is not suggested for Listen and Spot. :/ I don't mind the idea of spell levels equalling class levels, but there are some design decisions here (or oversights, I'm not sure) that really made me go 'hmm. . .' - like bestow curse being one level lower than remove curse. Maybe that works for some folks. Not for me. The HP variant rules look OK, and similar to stuff found elsewhere.
'Fighting Domains' seems like a silly term, given Cleric Domains 'n all. The feats in the second PDF, for the most part, look too Fighter-centric. That is, the other 'martial' classes seem left behind, in comparison. The general idea of feats scaling with level is good, but not new. And yeah, this seems to be confined to the Fighter class, at least mostly. Why? Well, never mind. I don't like the term 'Uber Feats', and the fact that only Fighters can take them. Oblation Feats don't do anything for me either, as it so happens.
So uh, I guess I'm not that big a fan. With some work and serious re-balancing, plus maybe acknowledging the Sorcerer and Bard classes' existence, it could be alright.