I was thinking about implementing this feature for a medieval mod I am making. As opposed the building unit with production, you can conscript the unit. If you can choose which unit to conscript, I will do it that way, or do it through different pre-built buildings enabling different units to be recruited.
Three questions:
Does this sound like a good feature?
Can you recruit different units in a city at the same time?
If the above doesn't work, can different buildings dictate what unit can and can't be conscripted?