This question came to me when MKX introduced the Factions
Units are based on MKA Konquest and MKSM

Lin Kuei
Heroes
-Grandmaster
-Tundra
-Sektor
-Frost
-Smoke
Units
-Grunt
-Grunt with Ice Mace
-Grunt Archer
-Cyromancers
(Units and some heroes can be Converted to Cyborgs through a Upgrade)

Special Forces
Heroes
-Sonya
-Jax
-Stryker
-Cyrax
-Kenshi
-Cassie?
Units
-AR Soldiers
-CQC Soldiers
-Grenadeir
-LAVs
(Units slow due to gear and weapons)

Black Dragon
Heroes
-Kano
-Kobra
-Kira
-Jarek or Tasia
-Tremor
Units
-Grenadier
-AR Soldiers
-CQC Soldiers
-LAVs
(Units have more fire power, but are SUPER slow with limited range)

White Lotus
Heroes
-Liu Kang
-Kung Lao
-Kitana
-Johnny Cage
-Raiden
-Kai
Units
-Shaolin Monks
-Edenian Soldiers
-?
-?
-?
(added edenia because im out of ideas for them.)

Brotherhood of Shadow
Heroes
-Shinnok
-Noob Saibot
-Quan Chi
-Reiko
-Kia
-Jataaka
Units
-BrotherHood Member
-Brotherhood Member with Weapon
-Brotherhood Demons (MKSM)
-?
-?
(Gets stronger during night time)

Other Stuff
-Cycles of Day and Night
Neutral Heroes
-Scorpion (Will join side if defeated except Lin Kuei)
-Sub Zero (Will join side as Sub Zero if defeated, will become NoobSaibot if defeated by Brotherhood of Shadow.
Neutral Bases
-Shokan establishment (Will turn hostile to anyone near by)
-Tarkatans Camp (Will attack everything and will raid bases randomly)
Sudden Death(if games takes more than X:XX amount of time)
-ShaoKahn
-Ermac
-Skarlet
-Goro
-Mileena
-SIndel
-Motaro
-Sheeva
Will Appear with Armies of Shokan and Tarkatans to attack players
To win sudden Death
-Defeat/Land last hit on ShaoKahn
-Outlast Opponents
-Defeat Opponents

So what do you guys think?
What would make it better?
What other units should be added? (make sure they appeared in the game before)