LoS was a huge deal in the first 2, but this whole get shot while in cover kinda ruins the whole point of the cover system. Would have made more since if it were like V.A.T.S. (Fallout 3) Where what you can see determines accuracy but this is rdiculous.
XCOM 1 - Run in warehouse and surprise alien. What to do? Depending on TUs take a snapshot and find cover behind tall box. No LoS. Wait for best. Hope you don't get flanked.
XCOM new - Same scenario but apparently (going by the animations) hiding behind tall box means peaking around over and over thus alien will shoot through box with perfect headshot. If only boxes could stop bullets... oh wait they in a DOS game.