Gavril D-Series: *Exists* In all seriousness, I don't see why the developers would add another pickup. There are already 2 generations of the D-Series and it can easily fill your criteria.
To be fair, they're a lot smaller, it's like saying "why do we need a pessima when we have the covet?"
Yeah, you're right, but at this point, both generations can already be used for many things, and the Dunekicker already fills in a gap left open. The developers really seem to be trying to squeeze everything they can out of the D-Series. Sure, it would be nice to have another pickup, but (except from visual and mechanical changes) they'd be very similar. I too would like a Japanese pickup in the game, and yes, it would help create more variety in the game world, but with the D-Series already being pushed to its limits, the developers can only really adapt the configurations of the other one accordingly. With that being said, I do see potential in this pickup, and players would enjoy putting both the D-Series and the lore-friendly Hilux to the test to see which comes out on top.