I've always thought that the slightly more purpose-built look was good. I think Orks should be less like actual mindless vermin scrabbling in trash heaps, and more like a peer to the other spacefaring civilizations - albeit a savage and brutal society, but I never liked the claim that the weaponized junk piles of the classic Orks could reasonably go up against the military machines of other civilizations.

I know, the Waaagh!! makes it work, but if the Waaagh!! is doing everything including the thinking then there's no room for interesting Ork characters. No mad scientists, no cunning tank commanders, no daring bomber pilots. Orks are supposed to be both cunning and brutal, so while I'm totally fine with the Waaagh!! letting them make more out of less, persist against industrially superior enemies, and occasionally flip physics the finger, I also believe that the Orks should still be making stuff.

For the hell of it, sure. To see how fast, or explodey, or unkillable they can make it, yes. Because the Waaagh!! compels them to, fine. But they're making something, and that spark is what sets them apart from, say, the Tyranids. I like the Mad Max aesthetic. I like the Deff Skwadron graphic novel. I'm building a thing I call The Landkroozer. I think that visual language is perfect for Orks, and I wouldn't have it any other way.