I'll just put this here and then have my thoughts below, +1
As a current 212th and an ex-sobde member, I don't see the harm in adding these whitelists especially as they are replacing whitelist that are not being used. It was like what someone said up above where each unit has their whitelist and are free to do whatever the hell they want with them. The argument of "3rd subunit" makes zero sense because while yes, it is 4 new characters being added to the 212th, it shares no difference as adding lore jobs to battalions. I've seen other units before make lore names a tryout even if the whitelist stayed the exact same.
This is obviously a little different in this case because these are "eLiTe" characters which share a connection with another unit on the server, but in the long run, does that really matter? Foxtrot in my mind (and what I can assume will happen) will not be given the same permissions as SOBDE, they will act like 212th members who just have a shiny "eLiTe" sticker slapped on their foreheads. There are obvious steps that can be taken here to make Foxtrot elite, but still subpar to SOBDE to allow them to feel like they have earned their spots in SOBDE. (For example, clearance, missions types, tasks.)
This is obviously up to high command, 212th Command, and SOBDE Command to decide on the do's and don't that Foxtrot will receive if they do get added. This is a roleplay community and we can bend a few things to allow units to still have their special little things. (I mean shit, half of the server lore names are dead in canon by this point.)