One thing would be that you realize how undulating "smooth looking" roads really might be.
With the full weight of about 60% of the car's weight (in that nose-down orientation) being tolerated by the two lower control arm bumpers ONLY, the rubber would soon fail and then it would be the metal platform to which each bumper is bonded touching the stub frame itself. Metal ON Metal. Think you've got road noise now??? No matter how insignificant the elevation change might look, it would sound like the biggest pothole you just drove over. IF YOU think it sounds bad, how do you think the car feels after doing that?
Even at factory ride height, there is about 2.5-3.0 finger-widths between the top of the LCA bumper and its contact point on the stub frame, on my '67 Newport factory a/c car. FWIW.
I know it might look and feel neat to "bounce" down the road, a smooth road. One night in the later 1990s, I was driving down a 4-lane city street a posted speed, when I had to nail the brakes as a small Asian sedan was in front of me, dang near stopped, to drive over a double train track crossing. The owner had cut the coils on the suspension struts to lower it, so it was bouncing off the bump stops all the time. To them, it was neat.
When I get in situations like that, at the first chance, I also look in the rear view mirror to see who might be behind me and how close they are. Yep, saw the hood emblem on a '72 Chevy pickup truck in the rear view mirror. Had to modulate what I was doing to not hit the small sedan and keep in front of the pickup, too. We all got slowed down, plus those behind the Chevy pickup, who had no knowledge of why people in front of them were stopped, with no red lights within at least 1/2 mile ahead of us! After they crept over the train tracks, they continued their progress down the street, oblivious to what had almost happened to them and others. IF somebody had not been paying full attention, some bent sheet metal would have resulted. Possibly some injuries, too. Although the small Asian sedan would have been the cause of the situation, driving too slow for posted speed/conditions, because TX is not a "contributing factor" state, the first car (me) would have gotten the ticket, then those that hit my vehicle after that. NOT GOOD!
After the small sedan had made it across the tracks, it did move to the rh side of the road as the rest of us drove past shaking our heads . . . as the three guys went on enjoying bouncing down the road on the bump stops.
Just my experiences,
CBODY67