How about don't do anything radical to the game other than enforce a clock between pitches and innings? And I guess the DH for the National League is fine, but mainly for competitive reasons - during Interleague Play, the AL has a 9th everyday player that the NL doesn't have, and I don't like the imbalance.

I brainstormed one time maybe if a batter strikes out for the 3rd time in a game, he's ejected. I don't necessarily advocate it, but it would be interesting to see an Independent League try it and see if/how it changes things.