I'm not in favour of any game changes like so many. Shortening innings? Are you crazy? Pitch clocks, this isn't basketball. How about start by getting rid of manager delays to look at replays before challenging a play. Make your call on the spot.
One thing I've always wanted is when an East coast team plays on the road against a West coast team, game times for Sat/Sun should be played earlier in the day when appropriate. I'm not a fan of watching baseball games at 1AM, start the game at 4PM local time, 7PM EDT and I'll be watching.