i think you have to think outside the box on this one. what makes a league more enjoyable or just "better" is not the rules or the format. it's the "extras." things like weekly trash-talking rankings, requirements for good, funny (emphasis on good and funny) team names, with applicable icons, etc.
in terms of how to run the thing, one thing we do in both my leagues (one started doing it after it worked so well in my other league) is in week 13, we call it "rivalry week." this is not only the week that most often is crucial as to who makes the fantasy playoffs, but you schedule all the nemeses against one another. for example, every week 13, two twin brothers match up. i face my old roommate because i love hating that guy, two other guys face off who dated the same girl awhile back, etc. so, not only is your playoff berth on the line, but also bragging rights against your nemesis for the whole off-season.
one thing i do personally with my nemesis is we've just somehow managed to have several disputes over marty booker over the course of the past 8 years. totally random. but now, our rivalry week "trophy" is the right to wear the coveted marty booker jersey to the draft the following year. we also call it the "marty booker bowl.'
anyway, my point is, THAT is the stuff that makes a league unique and fun. not the format or scoring system.