Chibi-Boku
if you play rock or metal it's less likely to be using all the "special chords" you use it more on jazz and blues....
Wow, I hate to tell you this, but that's so wrong it's bad. If you want to move ahead in rock and metal you have to find ways of using different chords to make things interesting.
Not only that, but complex chord structure is very commonly used in solo structure. Since you want to phrase solos in a smart way, you can use chord tones to write, and hey, why not make it sound cool too?
Try a bunch of 7th and 9th and 11th chords to get you going. They're quite cool in distortion.