I think this is a good question, unironically. What ARE the developers design goals? What style of play, specifically, are they trying to foster? Can it be described without referring to buzzwords or vaguery?
No matter which camp you're in, this would be very useful to everyone.
I, personally, do not think you can successfully split the difference between rules-light games like PbtA and the traditional/paradigmatic crunch of 3e. I think instead of the 'best of both' D&D 5e ended up being just mediocre at either.
I would prefer if D&D picked a lane and just stayed there.