Recent Mace changes are too severe.

It's no longer worth using. Damage of a stone sword and slower swing speed. With how much it takes to get, any incentive to search for it is gone.

The drop damage falloff is fine if you're bothered by one shotting immobile mobs from 200 blocks, but swing speed and base damage being on par with a diamond sword was all right for regular gameplay and nerfing that was unnecessary. 
If you want to make the Mace slower you have to compensate with higher base damage.
Not to mention you have us pick between enchantments that all work in singular scenarios, where the sword is allowed to have sharpness, working on everything.  

We got a fun, viable weapon for a few snapshots, now it's reduced to a gimmick.