I like your first base idea, that's pretty cool. I want to make homeruns less valuable because I think a big part of why pitchers are so dominant is because too many guys are selling out for homeruns. Decrease the worth of homeruns, and correspondingly, singles, doubles, and triples are more valuable. With more men on base, and still less reason for homers, you'll see more running, more hits and runs, etc. When guys are looking more to put the ball in play, they will be less likely to swing from the heels, and will make more contact.