Recently, I discovered Xenonauts. I have just played a little with 21V5 + patch, and apart from a few bugs (stability issues, base building scrolling -e.g. selecting the quantum cryptology center- is really confusing, and a few weapon related ones -% to hit- that I think are already fixed in V6), a few inconveniences (e.g. not being able to see how far you can walk and still shoot, not being able to click on the soldiers in order to see their stats), and the long loading times of battles, I really enjoyed the game. A really good remake! Nevertheless, I was surprised how the scoring worked, and supposed it to be buggy.
I was even more surprised when I discovered, that it was working as intended. I really like the idea of focusing more on air combat and allowing to skip trivial missions.
Nevertheless, I think it should be worked on. It should not be easy to skip terror missions, base attacks and base defenses by shooting down the UFO. Maybe something like this would help improve the game:
-Make the ships corresponding to terror missions, base attack and base construction way stronger. So, you can't shoot them down early. Give big rewards for great successes during those missions.
-Reward conquering a landed vessel properly, because now you better wait and hope you can down it later.
-Fix the bug that 0/0 civilians being rescued leads to terrible performance rating. This really kills immersion even if it is not used.
Those small tweaks would already greatly enhance the game I guess.
Furthermore, I think it would be better if you could only airstrike the weaker ships. I think best couple it
to certain technologies (e.g. missiles etc) and maybe earlier successes. So, you always have option of airstriking, but if
insufficient power it warns you that several aliens will/might survive the strike. Maybe give half of the relationship bonus for shooting down the UFO and half for successfully airstriking. But it indeed might lead to too many mandatory missions.