you don't have to stick w/ 7 note scales, try putting 8 or more notes into your scale (a dorian w/an added b5 sounds cool for instance)
Try creating scales w/fewer notes and larger intervals, have fun & keep asking yourself "what if", you'll never run out of ideas

one of my old teachers you'd to say this about playin guitar: "you have to learn in one lifetime what it would take the average person 3 lifetimes too accomplish".