I think one thing that might be fun is to go way back and do barnstorming again. Build on things like that Williamsport series, etc, and get the big league clubs and players out their playing in more accessible venues (and for more accessible prices). There are so many minor league stadiums/college stadiums/etc everywhere that could be used. It might help with marketing stars because people could see how their skills play up in more intimate settings. And getting 10,000 fans at those places would be an exciting and energetic atmosphere. Getting 10,000 fans in a big league park, as we know, is depressing. It won't happen but it would be a fun way to get back to its roots in a new and interesting way.
Also since there's not as much contact as other sports I think they should do way more with the television broadcast. There's gotta be ways to make the downtime more interesting. Have guys mic'd up every game. Stuff like that to show off more of the personality.