thing is from what we know of MMW it has a really short range so if they added it with LOBL with mode 2 they would still nead to guide the brimstone till about 5km
also the request for MMW were mostly curbed with the introduction of the SPICE-250 finally giving the EFT some kind of FnF weapon (still think brimstone 2s should be added as they would still be SAL they would just have a longer range then 12km)
There is a distinction between light vehicles with a gun/ATGM combo and pure ATGM carriers and I believe what @WaffleStomp0768-live here is asking for is a pure ATGM carrier.
You know, stuff like the Swingfire, Khrizantema or Zachlam Tager.
There are sub-types, ATGM Carrier is one of them. They also differentiate between SPAA and SAM in-game.
Edit: just checked, apparently they don’t differentiate those ingame, I could have sworn they did at some point tho
The roles just exist to balance spawn costs and to restrict the ability to use artillery anyways, so adding more roles wouldn’t necessarily change anything