I agree with all the votes except for propellant, we really need more propellants and engine types stock. This makes for so much more build options and consideration of fuel types and understanding what their advantages and disadvantages are (ISP, mixture radio, density, temperature, etc..
Also, why are procedural parts, specifically fuel tanks, inter-stages and structural components, not being considered as a stock option for KSP2!? I consider them to be the #1 mod of all time when it comes to rocket design. As far a procedural fuel tanks goes in the tech tree for career mode, you simply have size limitations, and/or only more advanced tanks can store both fuel and oxidizer in the correct mixture ratio.
Btw first post here, but I've been playing KSP since 2012!!! Looking forward to KSP2!
