The high volume Walgreens are still pretty fully stocked and well merchandised. In Reno they have five stores like that (~3200 S. Virginia, N. Virginia, N. McCarran, Carson City, Pyramid Highway). Then they have some stores that are what I call "pretty fully stocked" - these are missing some SKUs and missing back aisle facing endcaps (Vista, Gardnerville,~12000 S. Virginia). Then they have these other stores where they took aisles out, put boxes on a lot of unused shelf space on the remaining aisles, and look like they could go out of business quickly (Oddie, Lemmon, Los Altos Pkwy., Fernley, Fallon, Susanville, Grass Valley).
There is an interesting Walgreens in Auburn, CA. It has never done well. At one point it was converted to the "take aisles out and put boxes in the unused space" format. Then it was converted back to being a fully merchandised store but they did not put back in the aisles they removed (but they did put back the back facing endcaps). Last time I was there, they seemed to be in the process of converting it back to the low inventory format again.
I have noticed when traveling there are a lot of those aisles removed/boxes on unused shelf Walgreens in medium sized markets (most out around Medford, OR and many in Sacramento suburbs are also like that).