Fell Handed feat Is it strictly the weapons listed or could it also be for morningstar or mace?

Hi! ? about FELL HANDED feat. Is it strictly the weapons listed or could it also be for morningstar or mace?The feat isn't officially in the game, but if it were, the weapons listed are the only weapons it works with.

— Jeremy Crawford (@JeremyECrawford) September 1, 2017

I’m curious why not war pick, moringstar, and greatclub for it as well? Was it because you were looking for traditional dwarf weapons?I honestly don't remember. The feat didn't survive when we considered whether to make it official.

— Jeremy Crawford (@JeremyECrawford) September 1, 2017