I really like the suggested weapon attachments but those will take a lot of time and work to make. In the meantime implementing a combined rarity-durability system would provide several benefits:
The design:
See image below for GUI and an example scaling chart.
I’m not against weapon durability if implemented well, but I really don’t like basically the rest of the post. All weapons are always relevant, and I really feel like such a rarity system doesn’t fit the game at all.
I hate weapon durability it’s so annoying please don’t add this
I don’t really like durability in games, but it could work here.
About rarities tho… I’m not sure it fits well
We already have a resource sink related to weapons, it’s called ammunition costs. Resources and costs will be balanced properly later. I see no benefit whatsoever for adding durability.
As for rarity, expanding the research options with small but exponentially more expensive stat upgrades is probably the better alternative considering research is very limited right now.
Weapon durability in games is to me, one of the most frustrating and annoying things, so it’s a downvote from me