Mass Effect 3 Vs. Multiplayer Mode

Ok, this is what a Mass Effect Vs. Multiplayer Mode would look like if I designed it. I know what you are thinking it wouldn't work because everybody would just use Krogans. But I developed a couple of gameplay mechanics that would make the game work and surpass all expectations.

1. Everyone starts as humans. If you want to play as other races you need to buy them to use them per match.
2. You buy other races with credits. If you buy a race and you die you respawn as a human unless you buy a new race again before you respawn. Credits are also used to buy equipment such as rocket launchers, medi-gels, and so on. This items do not go away until you use them. Even if you die.
3. You can also buy reverse engineered geth and get special geth abilities and tech. You can also buy characters such as banshees and so on.
4.You can fully customize your weapons and armor ala Mass Effect 1. So almost nobody will have the same armor or weapon mods.
5.Xp is used to buy Rank which determines which abilities you can use and grants you access to better armors, weapons, and mods. Armor,weapons, and mods can only be bought with Xp.
6.Abilities are now unlocked for use by getting killstreaks.
7. Before a match your team will be given a rank based on gear on hand,equipment on hand, and starting race.
8. Going against higher ranks yields more xp and credits.
9. Higher ranks will be given challenges when going against lower ranks. Challenges unlock rare equipment,armor,mods and weapons.
10.Challenges for weapons,races,& ranks will always be available for each match.
11. Races level up as you use them and complete challenges.
12. Get xp bonuses for comboing killstreaks.
13. Game modes: TDM, King of the Hill, Objective type matches and The end is nigh.
The end is nigh is a mixture of all game modes. Where you raid an enemy ship and try to destroy it from the inside. While the other team tries to stop you.

Billy Mayes voice! But wait there's more. An online auction house to sell rare gear you find!
Completing all team challenges during a match grants you access to a special mining mini game where 1 person is mining a planet while the other players are defending the ship from other ships on turret guns. You can get rare materials to make rare guns,mods, or amors here. You also get alot of xp or credits and even rare armors,mods, and weapons. People who do not quit matches within a 24 hr period may be randomly selected to do this mini games as well.