It would be REALLY nice if we knew what we passed.

Slight spoiler ahead.

Example: The mushroom shelves near the Festering Cove entrance.

It took me failing a check & jumping on an illusion shelf to figure out that the Investigation Check I had passed was seeing through the shelves that are illusions, causing them to disappear from view.

A simple, 'Oh, the shelf disappeared. It could be an illusion. I better be careful.' would make absolute sense.

I totally thought I had a bug because I kept passing a check but nothing was there & the shelf just poofed. There was no way for me to know what exactly I'd passed for.

There are other instances where a little more clarity would actually make these kinds of checks useful.