Would be nice to add Titanium to the game. You can even keep an semblance of difficulty with trying to make it much the same way as RealLife requires special sensitive tech to forge it.
Adding a specialized forge that requires your base to have a functional electrical system to play a role in powering the forge, since you would need electronic components to monitor the forging process of Titanium and the delicate balance of temperature and pressure needed to extract a usable purified form of Titanium.
Adding an Advanced workbench that has a slightly higher tech look to it as well as requiring the Electrical system to power, in order to deal with some of the quarks titanium comes with when using it in a production environment.
Then all the reasonably expected additional next Tier above Steel to titanium Tools, Armors, Building blocks and Special Mods made using Titanium that enhance performance of tools and weapons.
Adding a specialized forge that requires your base to have a functional electrical system to play a role in powering the forge, since you would need electronic components to monitor the forging process of Titanium and the delicate balance of temperature and pressure needed to extract a usable purified form of Titanium.
Adding an Advanced workbench that has a slightly higher tech look to it as well as requiring the Electrical system to power, in order to deal with some of the quarks titanium comes with when using it in a production environment.
Then all the reasonably expected additional next Tier above Steel to titanium Tools, Armors, Building blocks and Special Mods made using Titanium that enhance performance of tools and weapons.