I would say that you are right, but I think that I would:
- tone down a Siren Mind Control a little bit (lower its maximum Willpower to 20, so she could not control too many units at once - but also lower soldiers maximum Willpower level to something like 10 or 12), and let at least 3 or 4 of them roam on single mission on High threat level. On Medium let it be 1 or 2.
- provide limit of 1 Chiron of each type to single mission. So you can have 3 Chirons on a single mission, but each of them must be of the other type: goo / worm / mortar. Of course there could be more Chirons in the reinforcements, but don’t allow more of them exist on the map simultaneously.
My biggest concern here is that after a month of in-game time they are almost fully developed from mission to mission. And i still have most of the weapons in my arsenal those basic from Phoenix Project.
I think that during the day it is as mentioned:
I’m still not sure how night or mist influence this. But basically each % of your stealth reduces perception range of enemy by the same factor. And I think that firing from most weapons also reduces stealth for some amount.
Cover doesn’t do anything here unless it is wholly blocking line of sight to any part of your infiltrator.
I’m not sure about this. Maybe for the Pistols. But decrease in accuracy is not preventing from firing even when soldiers are not proficient. So they can use those weapons anyway.