Not all deaths are meaningful and satisfying. Sometimes, good people just die for no reason at all and you just have to deal with the aftermath of it. In my mind, the only problem with killing off Omid like that was that the time skip kept us from having to really deal with the ramifications of his death. That could have been a huge moment of character development there and we just missed it.
I suppose your right, the aftermath is usually the most depressing for me, that might be why I didn't feel sad, because we didn't see the ramifications, in season 1 there were ramifications and they did add to the sadness, missed opportunity.
Favorite games of all time
1: Bioshock Infinite, (along with Clash in the Clouds and Burial at Sea) Walking Dead (along with season 2)