Add tutorial or/and info windows for explaining individual function. Numbers in the fuel window etc. will be overwritten but the change will take effect after clicking out, better to take effect when overwrite immediately.  Slider with points like 1-10 need fix to be evenly spaced. Clean up the interface from unnecessary things. Beware of illogical things. 

thanks for feedback

i did add tooltips, and fixed sliders. 

soon, i will prepare simple tutorial and some gameplay video