Aliens should see further

[grrussel]

afaict, Aliens can see a range of "20" tiles.

Increasing that would seem to make the AI a bit more challenging. Otherwise, on open maps, it is really a bit too easy to have a scout see, hide, and the rest of the squad snipe from across the map until someone gets a hit, all from out of range.

[Daiky]

I would suggest something more flexible: a visibilty range and a nightvision flag that is dependant of alien race. Keeping it default to what it's original xcom + you are able to add some interesting tactics if you want a different gameplay.

The nightvision-flag should come together with a option to turn your personal lighting off (aliens can not see in the dark: they see your soldiers because soldiers emit a big area of light around them. Aliens don't).

[Fenyő]

they see your soldiers because soldiers emit a big area of light around them.

I always thought its just an illustration, and not really emitting light. (so the user can actually see what the soldier see around)

[Kyzrati]

I would suggest something more flexible: a visibilty range and a nightvision flag that is dependant of alien race. Keeping it default to what it's original xcom + you are able to add some interesting tactics if you want a different gameplay.

That what I'd do I did

Race determines whether or not they can see without light, and each unit has its own sight range value. You could also do interesting things with that like lowering a specific unit's SR due to a head/eye injury (X-COM already reduces accuracy for head injuries), or increasing it with special gear.

I always thought its just an illustration, and not really emitting light. (so the user can actually see what the soldier see around)

I think it comes from the armor, so I have it attached to that--remove your armor and the light goes off.