It seems like the TTL is intended to be used almost like a flash meter? Which begs the question -- why not use a flash meter?
Being able to control all your lights from one point is definitely a plus, but that's not the point. Most photographers that I know that use lights of this calibre have very specific end-results in mind and would NOT want the light making a decision for them. It does indeed seem more like a marketing ploy than anything. Goooooooooo Speedotron!It seems like the TTL is intended to be used almost like a flash meter? Which begs the question -- why not use a flash meter?
I guess Flash Meters are for Novices. Cool old schoolers only need their eyes and extra time. Plus its easier to walk around to each light then to change it on the fly.
I think a strong argument can be made that this is what speedlights are for, but I think a decent counter argument can be made that if you're shoo... err, photographing presidents, you should be getting the very best possible pictures, and a few thousand bucks is chump change.
You can run speedlights on battery packs too, though. I think the use cases for the TTL feature are genuinely very narrow. You really have to need monolight-specific features combined with speedlight features.
Somebody seems to be mixing in the ability to remotely control flash power via remote control, with TTL flash decision-making: the first technology has been around for a looooong time. The second ability, allowing the TTL sensor to make the exposure decisions on a $2,500 studio type flash...well, that's a BRAND NEW technology.
I can see a pair of these being popular with really wealthy MWAC-type shooters who want to buy monolights, and have a status symbol that can make the exposure decisions for them in simple baby- and child-photography scenarios.