[AlanHK]

The plugin size is now fixed at 330 px high, suitable for 220 dpi or lower, where it will fill the 1.5" high "grid view" slot. But on 300 dpi like the PW-3, you need 450. While changing the code in plugin.py works, it is lost when the plugin is updated.

So can this be made a preference, and preferably in the gui?
Also, when launching the plugin, the gui displays links for the starting point, the cover file and the TOC.

However, while it has a setting to "Add fake ASIN", it does not indicate if there is already one set in the epub, or what it is. Since there are several formats for these in the OPF: EPUB2, EPUB3, AMAZON, MOBI-ASIN; I'd like to see what the ASIN will be read as in the end; or if the syntax is wrong and a random one will be generated. In the latter case, display the string that will be used.
Ideally: have the "Fake ASIN" be settable from the GUI and written into the epub.

Motivation:
When working on a book file I will almost always load several different versions on the Kindle to check. With the random ASIN, each will have a differently named thumbnail, sdr folder and AZW. Deleting a file from the Kindle GUI only deletes the book file (AZW/MOBI), not the other files.
With a fixed ASIN, I just have to upload the AZW (unless I've changed the cover, which is rare). The info in the sdr folder works, though bookmarks may be off.

So these redundant folders and images remain, and with the random names from the ASIN, aren't obvious in the file listing for manual deletion. I've got 100 or so books on my Kindle now and it's not too hard to find them, but I have room for thousands, and cleaning them up then would be rather tedious.
I know these files are not harmful, but hate to see junk pile up from every time I've loaded, paged through and deleted a book to replace with a revised one.