Elerian, that's an IC view, not an OOC one, surely!
Anyway, about the idea. Obviously, the army already exists. Not with PCs, but ICly, the Waterdhavian Guard numbers in the thousands. As well as the Griffon Riders (Knights?) of Waterdeep, and other things. The Waterdhavian Guard has (in the FR books/lore) ridden to war several times (I think most recently, against the Shades of Anauroch?). It does exist IC as an army. So it is there to be "played" with, as it were.
Personally however, as a player, I don't think we have the numbers to fully support a PC-based army. My only OOC, player suggestion would be to just have titles over the army, rather than coding the actually army. That is, making a General, and several Captains. Maybe in the future, we could code it so in certain times the General and Captain could actually summon three or for mobs to fight with them, reflecting code-wise, some troops?
That would make sure the players would have to be trustworthy of course, and that they are only ever used in Waterdeep-licensed conflicts. If a Captain is beyond Waterdeep's territory and "summons" troops, they've just caused a war. And nobody will be very happy with that!
The same sort of "title-with-summons" could be used across the board, potentially. So, the Ebon Spur captains and generals can use a summon command to gather three or four of their troops. If someone wants to apply to be a Purple Dragon (*ahem*) they could use a summon command to gather three or four of their troops. Whilst it is not enough to dramatically unbalance the MUD, it means "small, localised raiding parties" can be RPed. In times of war, maybe the imms can have a few dice rolls behind the scenes to see which units win where, and provide regular updates to the battle?
Those would be my ideas. Keep the idea simple. Don't code a complete Army, with ranks from private to General. Just create the officers and assume the Army exists below them?
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