Can't edit posts still so annoying. Anyway another thing to look at which I feel is EXTREMELY important is to build into the game a LORE system. So basically something that describes weapons, ships, based status, storyline pieces gathered, things of this nature. That's seriously important because I feel it can be a fun aspect of collecting weapons to just breakdown for another achievement by piecing together the weapons descriptions and game lore.
Also helps for figuring out what weapons to use.
If possible add in multiple save slots. Say I wanna start a game match but my daughter wants to play on my phone. Why not allow save slots to enable extra gamemode play. Of course keeping the permadeath system in place for those saves.