When it comes to isometric graphics, 3D is superior to 2D in every aspect, both technically and visually. There's one condition though: if it's done right.
I've seen no fucking isometric RPG using 3D done right. Neither technically nor visually.
If you have you have never witnessed a good 3D
isometric game, how do you know that isometric 3D is superior to 2D?
Not sure if trying hard or too much ale.
For instance, strategy games are doing it pretty well. As long as they stick to open spaces and put a minimal effort to make graphics clear.
In RPGs there's a big deal with indoor scenes and crap obscuring the view. 2D games solved it through specific level design. 3D games solved it only partially through camera adjustation. Stupid manboons never heard of walls translucency. As if it's any challenge.
3D being disappointing is only the fault of developers, not the technology. Call it incompetency, wrong goals, cost cutting or whatever. I call it idiocy.
The days of significant hardware limitations are long gone. Current cards are capable of generating in real time results being on par with prerendered. Go watch any tech demo. It ain't a magic, you know. Just standard features. And what you ask for is just a sharp, highly detailed image. It's nothing.
Have any complains, go ask graphics programmers: "why"? Defenestrate them after.