Afaik they use less power for the same cooling capacity which would be a pretty nice cooler replacement in the future. But it will probably take some time even if FW engineers had the time to try it out right now. Integrating a cooler into the FW where every component needs to be in the exact same position because of compatibility issues would require a lot of work.

It’s due to overtake a lot of conventional fan technology, eventually, increasing the wattage consumption vs dissipation as far as I know scales with size, but the dedicated control board will probably be integrated into the units themselves for drop in legacy control, or they will get more sophisticated and replace existing fan controls. It’s a real neat technology, but it will take awhile for framework themselves to implement into their products, but their open approach will be a huge asset for off label upgrades

Im theory is a great idea and i had the exact same thought as a drop in mod or included with future mainboards. I dont think the technology is there yet especially for relatively high watts on current gen amds/intels compared to mba with m2.
Fingers-crossed in the near future. A passively of near silent framework but without huge performance loss or throttling would be a dream come true.