I’ll give you some.

• Control bases won’t work with funky trees, since it messes up the controls in SPVR.
• For the autopilot that makes the craft level with the horizon, use the funky trees code: (RollAngle / 2) for the roll angle for example (the same can be applied to the pitch angle). The roll angle function, divided by 2 to prevent aileron fluttering, maintains the crafts stability by countering any difference in the roll angle. You can add a number after the (RollAngle / 2) to allow a difference in the orientation of the roll angle and (Roll * 15) is one example of such addition; it allows a roll input, multiplied by 5 for intensification, that can neutralize the roll angle function a bit but won’t let the craft roll too hard.
• When making engines, don’t increase the engine maxinput, since maxinput is tied to increased fuel consumption for increased power. Increase the multiplier and horsepower instead, so it remains powerful while efficient.
• It is highly recommended to measure by the power of 5. It not only makes making crafts easier but allows measurements to not need too many numbers.

I think that’s all. Might add some later, or not.