For infection mode :
- In addition to spartan vs flood , how about Promethean vs flood and covenant vs flood .
New invasion with playable factions all four : spartan , covenant , promethean , flood , with classes :
marine , odst , spartan , grunt , elite , jackal , crawler , knight , carrier , combat , and the big hunter like ones .
firefight : same factions as before , without the classes , and with customizable waves , so for a first we can fight against humans.
Dont know about spartan ops , but if it returns , i would want it to be also offline .
In general : support for all character models , with a few custom options for elites , knights and combat flood (kinda like reach with the elites Or Halo 3’s part customisation )