The DoM looks great for Mirwais! I've had a few ideas for Afghanistan as well, though this does make them look slightly more warmongery:
UA: Graveyard of Empires (This is far too good as a UA title to throw away, in my opinion):
Culture
in cities built next to mountains contributes towards Great People. 50% of a city's
Defensive Strength is added to
Culture. Great People may be expended to give units a
Combat Bonus for 10 turns.
Reasoning: Basically, this all synergises to create mountain strongholds that can pump out Great People to expand Afghan culture, or to ward off enemies. It would just be Great Writers, but too many modded civs just focus on them - not that it's a bad thing, but diversity is always good. It does, in my opinion, live up to its name, while not being overly defensive. You can also use it to attack, which Afghanistan did a lot of.
UU: Qizilbash: Has one more
movement point than the Rifleman it replaces. After killing another unit, all units in adjacent tiles have +10%
Combat Strength the next turn.
Reasoning: These guys weren't strictly Afghan, but I thought they were pretty cool. I was going to stick the rather generic name "Durrani" on them, but I decided that as the Durrani used them, I could probably get away with it. The combat bonus is based on the fact that the Durranis managed to have success after success when fighting against the disintegrating powers against them, and the movement based on the fact that they occasionally used Cavalry, but I didn't really want two mounted units, as you'll see in a second.
UU: Ushtranaal: Unlike the Cavalry it replaces, the Ushtranaal functions as a Siege unit, and has a 200%
Combat Bonus against cities. Whenever it attacks a city, the unit generated Great Writer points. Costs more to produce, and has significantly less combat strength. Can be both a Melee and Ranged unit, but cannot move after attacking.
Reasoning: Never really heard of these guys before, but basically they were cannons on the backs of camels, and unlike the unit TPangolin suggested I forget the name of, they were unique to Afghanistan. At least, I presume so, as they only show up in sources about Afghanistan. In the end, mounting a Gatling Gun on a camel? Pffft. Give me Cannons any day.
So, that is my general idea. Use/don't use what you want, but the likelihood is that I will make this anyway, at least as an alternative version. I'm up for coding Afghanistan as well - though I still disagree on the icon, as the symbol really doesn't symbolise Afghanistan much, and it actually looks more like typical Afghan architecture more than anything else. I'll give you it looks pretty sweet, though. Granted, the Hotakis didn't have much inspiration (their flag was just black, literally nothing else there), but I still think the general symbol that appears on most Afghan emblems is better. Not sure if the design overlaps with Vietnam (I think it might in some places), though mainly because I don't know what the current plan for Vietnam is.