I found this
interesting video on the evolution of floors in the last three years.
The video is in Italian, so here's a tldr of the main argument:
A floor like the F1-75's one, which was very smooth, was the theoretically the best kind of floor for ground effect cars (allows for very clean airflow, or whatever the correct technical term is).
As we know, that kind of floor had the drawback of creating porpoising (although, through either skill or luck, the F1-75's porpoising didn't compromise the overall car's performance).
On the other hand, RedBull's floor had a lot of jagged edges and complex shapes. That wasn't optimal but eliminated porpoising.
Now, having learned of ways to control porpoising, teams are actually trying to go back to a floor that is as simple/smooth as the F1-75 (this can be seen from the photos of the 2024 Mclaren floor).
He also praises the SF-24's miniaturized rear suspension, which according to him is a complex way to achieve the advantages of a RedBull-like setup, and get additional advantages.
Now, I can't confirm that this person knows what he's talking about (I'm not one to judge), but the video was interesting!
