Glass essentially turns everything into a 1 Hit kill instead of just Melee. The maps are not designed for good cover so there is always flanking fire. If you have a Fireteam without a Titan (or 2) it gets really nuts. Most strikes you can't get a good strat going until the 3rd or 4th wipe. Never mind when the enemy fire matched the Singe burn type. Blackout modifier is a piece of cake next to Glass IMHO.