The heat model in KSP2 seems to be worse than KSP1, as the developers have chosen to move away from KSP1's detailed simulation approach in favor of a deterministic model. KSP1 with RSS (Real Solar System), RP1 (Realistic Progression 1) and RO (Realism Overhaul) installed is a much better game than KSP2. The foundation for KSP2 should have been built upon the KSP1 experiences with RSS +RO + Principia. Flying realistic rockets in the real world with real engines. They could have also kept the parts count down with procedural tanks. Difficulty could be scaled N-Body Physics (Higher Difficulty) vs 2-Body Physics (Lower Difficulty) the same for complexity of live support.