Well, the thing is. Armor Despawning is good and bad, First it's bad because imagine dropping 100 things that wont ever despawn, it's good because of what you mentioned, Maybe tweak it so that it despawns after set ammount of days to simulate someone taking it or sumthing, otherwise great mod.

I'd appreciate if someone tests this a bit. I'm not sure if it is working entirely flawlessly. Not sure if armours work the same as other items or not. But I believe it should.