That does look interesting!!
I'd imagine the top strut mount would have to be swapped out for a non standard one because it would be loaded by the spring with some of the car's weight, something the original one would not have been designed to cope with.
I always thought the main load carried by a standard set up was a tension load ie we have very little compression damping but a lot of rebound damping. With this design aren’t that now prominently loading the strut mount in compression with the spring?
Then it makes me wonder if a stronger but still insulating top mount would be possible to fit for road use. I'm sure they would have camber plates there which is ok for motor sport, but it would be harsh for road use.
Other thought is - how strong is the chassis at the top strut mount position and how much extra force can be transmitted to the chassis through the mount without having to reinforce the chassis around it. I guess this rally car would be a good source of info, be interesting to see the top mount design and how long it lasts..........