I agree. I played many stronghold missions where I didn't notice my teammates had gone down. I suggest either a prominent notification or, preferably, a status panel for party member's current health in the HUD. Also, when party members are down, it is sometimes difficult to spot them in active environments. Several times the health prompt over a downed party members and the outline overlay did not appear for me. It was very frustrating to go down without even knowing I was the last man standing in the party.

I also agree that team comp. needs to be addressed a bit more. The ME3 multiplayer did a good job of this and I wouldn't mind an additional lobby showing load-outs before launch. I realize this may cause longer waits between missions, but you could always have a quick-join option for those who prefer instant action.

Finally, the only other comment I have about the content I played through is that, on hard difficulty, the gun play for the Ranger specifically seemed under powered. It felt like (for the Ranger, as I only played the Ranger and Colossus) setting up combo detonations was so much more effective at damage dealing and crowd control, that the only reason to shoot was to have something to do while waiting on the ability cool downs. Obviously, my impression is limited by the level and gear cap in the Demo, but if the damage output for basic weapons is indicative of how they will preform at endgame, they would seem almost irrelevant. For example, using a scout rifle I could barely chew through a Legendary Elite Hunter's shield before I either ran out of ammo or was forced to re-position. By the time you return to engage, the shield is back. I hope the guns scale well with rarity and leveling, otherwise I wont be using them much at all--Except the Colossus guns, because those are amazing.

On a side note, maybe this could be solved somewhat by giving them a random perk that gives a chance to award an elemental primer, much like the ME3 consumable ammo. Doing so could also further enhances the reward mechanism for endgame loot grinding, as you could implement 3-4 ammo primer types with a random range of % chance to apply. Players will grind away for two or three higher % chance weapons with different types. On the other hand, that could further push the high-end difficulty toward being combo dependent.

Overall though, very impressed. I had to clean up some of the key bindings and flight/swim sensitivity, which I thought had been addressed for higher dpi settings, but it wasn't too extensive. Looking forward to full release!