Wilt, I just wanted to comment on a few of your bullet points (highlighted in bold font).
Wilt wrote in post #11069440
Cons MonolightMore weight aloft for every light, makes stands top heavy
More weight aloft for hair light, increases counterweight mass
Must climb to each light to adjust power
Must climb to each light to turn on/off modeling lights Some monolights, for example, the Elinchrom Style RX monolights can be controlled remotely without the need to climb to each head. The same goes for turning the modeling light on and off.
Wilt wrote in post #11069440
Cons Pack+HeadsEach head divides available power
Add heavy power pack to add light output power
Individual control of modeling light (on/off, or power level) individually at each head requires climbingDistance between heads due to power cables, unless you add power packs
Least portable lighting available
I didn't know that you could control the power output of a head that's attached to a pack at the head itself. I thought they were all controlled at the pack. I do know about the modeling lamp control at the head, though.
Wilt wrote in post #11069440
Cons SpeedlightNo modelling light to see effect of lighting placement without taking a photoIndividual control of light (on/off, or power level) individually at each head requires climbing (unless ETTL ratio control)
Recycle time, unless expensive battery pack is used
Limited number of flashes due to battery capacity
Fewer light modifiers available compared to studio strobes
Max power generally lower than even small studio strobes
The Canon Speedlites have a modeling light feature which allows you to "preview" the lighting set up. Granted, it only lasts a second or two but it still serves as a modeling light.
BTW, which category would the battery packs + heads fall into? Or do we need to add another category for them.