Clerical Work: Specialty Priests of Gond for D&D 5th Edition

I'm tinkering with importing the idea of Specialty Priests and channeling a bit of DnD 4E by treating them as Feats.

Specialty Priests of Gond

Gondsmen Feat
Prerequisite: Cleric with Knowledge Divine Domain

• You gain proficiency in one tool of your choice.

• You gain proficiency in either renaissance firearms or one skill of your choice.

• You have advantage on Intelligence (Religion) skill checks.

• You can add half your proficiency bonus, rounded down, to any Thieves' tools check you make that doesn’t already include your proficiency bonus.