[JSWolf]

@varia, you have too many unneeded required columns. Some of them really need to be optional.

Tracked, my review, and type should all be optional.

As for tracked, see how Reading List adds books to your lists without the need for a column to add them.

Start date and finished date should just be one date column. If you look at Kobo Utilities, you'll see it tracks reading position on a Kobo Reader. There is % & timestamp That timestamp is the only date I would need.