It looks like an interesting system. I'd like to see a video that has more of an engineering perspective, shows how the thing works, explains the various parts, etc.

A winch and cable would probably be better; less KWh and cheaper ? safety is assured already, as long as the bottom portion is airtight with a small exhaust valve/orifice for a controlled descent.

I don’t know if that is a great idea... Those motors consumes a lot of energy. I counted 5 motors (probably 6 in there) each one consumes approximately 1000w multiplied by 6 = 6.000w. That’s a lot of electricity!

What was that? I guess no news is good news?