if I understand correctly, the catcher is no longer allowed to block the plate.
that's part of the problem I have with this change. defenders can block 2B & 3B if they're holding the ball. if a player is trying to get back to 1B, the defender can block the bag. it seems subjective to make it illegal to block the plate.
I see the difference between the types of plays that happen on the bases vs. the plate. no one is going to run from 1b to 2b and throw elbows at the shortstop. the runner would most probably over run the bag and be tagged out anyway.
when the catcher has the ball, he now has to stand to the side of the plate. that allows the runner to slide to the far side and improves his chances of being safe. I suppose catchers will now start running up the line where the runner is forced into a more narrow pathway.
"There are three kinds of lies: lies, damn lies, and statistics." - Benjamin Disraeli