In my opinion, yes, even with the keen mind feat. I just think it is that hard to do.
I think it is theoretically possible, but in my mind the wizard must have some way of imagining it, and the amount of detail and precision involved makes it unfeasible, in my opinion.
I think the idea that illusions interact with light is just way too full of implications that cause way too many potential and unpredictable problems.
I agree with you but was surprised to encounter a wide range of opinions on this and also on the implications that arise when one person interacts with an illusion.
As explained here, I can easily understand this and allow it. This seems more like adding a bulge to the wall. This is decidedly different than building a 2D "screen" that is separated from the wall and trying to make it match the wall. Likewise for a cube that is intended to match up to three-five walls and remain effective from various perspectives.Which means that you could create the illusion of a barrel around you, visible as any barrel, and three dimensional. Or a wall, like the one you're against,while you flatten yourself against the real one. Sure, if someone gets close enough they'll see the wall is about three feet from where it should be...
But such an illusion could fool anyone at only a slight remove, so long as it is subtly curved just enough for your body.