Of course.
Mithras may well be atmospheric, but, of course, atmosphere alone does not good music make. Nile, in my opinion, craft brutal, memorable and atmospheric tracks. You, no doubt, consider the Egyptian thang as a "gimmick". I consider it to be one of the elements that make them most interesting to me - not least the considerably fascinating liner notes.
Steering the convo away from "X SUCKS", "NO X DOES NOT SUCK", good liner notes are somewhat lacking these days, I'm afraid. The notes on Vader - De Profundis were always among my favourite, although that could well be because they're so badly translated! (I'm not trying to be an asshole, because I know you're an MP3 bandit - but sometimes the whole package can really increase the enjoyment of the music).