I unpacked some other mods, studied the files for half an hour, and this is what i came up with. A simple mod that adds two extra Health and Energy upgrades.
I chose this to be the first mod i create because, well, come on, there weren't any other upgrade mods on Davoonline, and it could for the love of god definitely use some. It definitely didn't seem to be a difficult task for me, so i gave it a shot.
All upgrades have full descriptions, custom icons and names, that actually cost money, with proper multipliers.
Health increases to 6000/7000 on normal, 9000/10500 on easy, 1800/2100 on hard (all exclude prime specimen).
Picture demonstrating they exist in the Collections menu:

Download is in the attachment. Mirror: OneDrive
PLANNED FUTURE ADDITIONS:
*Better tool page layouts
*Cargo Upgrades up to level 7 (UberCargo goes to 5)
*More effective firework-like consumables
THEORETICAL FUTURE ADDITIONS I PROBABLY WONT ADD:
*Scan upgrades that make the scanning area wider
*Travel speed upgrades
*Cargo beam speed upgrades