As already noted, I believe the "vanilla spotting" feature - which depends on the intelligence values - is something very different than scout/sniper feature, because in vanilla the enemy units can't shoot at you unless they have personally obtained a vision at you on that specific turn
Not sure what to tell you, but just try shooting a Muton into the back with a pistol... he will turn around and shoot back at you without ever seeing you.
So, what I understood from the UNITPOS.DAT article, is that "being spotted BY REGULAR alien" allows psi attack, but not regular attacks.
It allows psi attacks and launcher attacks without LOS.
It doesn't allow normal attacks
without LOS.
But it's not "useless", the alien AI can and does use the "spotted" flag for decision making. For example to set up an ambush, etc.
(Don't ask how, I won't have the time or patience to explain.)
And with this new Scout/Sniper AI it is possible to "be spotted by A SPOTTER" and that will open door for shooting and grenade throwing, am I right?
With Scout/Sniper turned on, the snipers are allowed to shoot/grenade the scouted targets also
without LOS.
That's the only difference (and the heart of this feature).
Now I hate unstructured and unsearchable articles in ufopaedia.org even more...
@everybody: Xcom is complex, more complex than you know. No matter how much you know, or how much you think you know, you always know less than 20%. Btw. I am no exception to this rule. No one is. The sooner you accept this, the sooner you'll be able to play and enjoy this game without losing hair.