Speed makes the first loop feel better, stability protects strong seeds, yield increases capped BudBucks value.
Hash Coins and Nug Fragments upgrade the room. BudBucks stay cosmetic and never boost grow odds.
Modules are useful but bounded, so the Lab stays collectible instead of becoming an infinite currency printer.
Upgrades
Earned sinks.
Useful sinks make the economy last: resources leave the system while the player feels progress.
Cosmetic Lab Store preview
Sell style, not power.
Future BudBucks purchases should be deterministic cosmetics: room skins, lab posters, card sleeves, slab frames and Street ID displays. Earned modules still control gameplay.
Visual Grow Room themes only. No timer or quality boost.
Display cosmetics for cards in the Vault and Street ID.
Profile showcases and collection presentation later.