Thanks for the suggestion guys! Yeah, don't expect an update anytime soon since I'm back in school and working part time now, but I'll probably do marines with the green armor first then if I'm up for it add halo wars era spartans. I'm trying to steer clear of too many dependencies and I don't particularly want to use anything that requires A2:Fireteam Zulu because of the random headgear. But again, thanks for the suggestion guys!

If you want Mark 4 for this, I wouldn't recommend my Aux Mod. It has far too many requirements, rather you can use the Misriah Armory mod for them, as thats where the models came from.
https://gtm.steamproxy.vip/workshop/filedetails/?id=2901732103

think theres also mk4 in this mod
https://gtm.steamproxy.vip/sharedfiles/filedetails/?id=2875759867

heres a couple mods with mark 4 Mjolnir, aka "HW spartans", aka what they wore for 99% of the war only upgrading in the final years. hope it helps.
https://gtm.steamproxy.vip/sharedfiles/filedetails/?id=3269613407
https://gtm.steamproxy.vip/sharedfiles/filedetails/?id=2022918637
also you cant change the units voice in ALIVE editor, it will always revert back to what unit its based on once it spawns. so if its based of a nato unit itll speak american, chines for csat, british for ctrg, ext ext. only way to overwrite it is to manually add a script to the autogen files. in the part of the units code that says
class ALiVE_orbatCreator {
init = *lots of code*
};
add _this setspeaker 'Male05ENG'; somewhere in the init
list of vanilla voices
https://community.bistudio.com/wiki/Arma_3:_CfgIdentities
free to shoot a friend request if you got any more questions, always happy to help if i can

Probably not. I don't know how to make any assets, I'm just using the Alive Orbat creator to make these. Unless there is a mod that has the HW spartans' uniforms then maybe I can throw it in the mod.

GREAT MOD. any chance to add HW spartans