Problem

As you know, in later versions, crouching changes the players' hitbox and eyeheight. This ruins bridging muscle memory and makes certain types of bridging much more difficult

Solution

A config option to toggle this on or off

This isn't possible. The client predicts the block place result client-sided before the server processes the block place. Unless you are modifying the client too, you will just desync both the client and server.

This is a shame. Thank you for the consideration

This, if implemented, should be done so together with #69