420 feet in the corners and 440 feet in the center. More doubles and triples. Less home runs. The game will become more exciting again. If a home run is less likely, it might be worth the risk to steal 2nd base. Now they don't even bother to try when the next batter might hit a home run and it'll be a wasted run if you get caught stealing.
Here’s a crazy idea:
Make the Distance based upon a mathematical formula looking at how many home runs there were the year before contrasted to how many stolen bases.