I've been deleting those maps since beta they literally waste of time unless you believe one man's trash is another man's treasure lol.
Treasure maps can be real excitement if you put some valulable items in the loot table. My suggestion is add monster helmets in the loot table and make the chests locked. Lets us open them with our gold and silver keys. Add rarity system to them for example; high rarirty maps will let you find rare chests with lots of locks on it like 10 gold lock 10 silver lock and those chests will yield one of those sought after traits like infused, divines or nirnhoned. While low rarity maps yield more common chest with less locks on them and they will drop those useless trait items like explore, sturdy etc. Give low chance to drop for monster helmets but not like %0,0001 give %10 chance add good amount of gold like 10-20k. Make them real treasure chests. People would kill each other for treasure in old times but in the elder scrolls people just delete them shame...
i agree on renaming them to garbage maps
not to your suggesion of monster helmets because thats horrible