The SCMA list is pretty awesome. I've done 76 out of 104, not in their "prescribed" order though. Each grade category generally has one excellent example of each crack size (tips, fingers, rings, thin hands, hands, cups, fists, OW, etc) and style (straight in, corner, stem, roof, lieback, etc). I know my crack climbing technique has definitely improved by seeking out some of these routes... Give it a shot!