When going through transactions, I manually adjust the category and write the description regarding the purchase. When going through one by one, I wish to tab through the cells. For example, after setting up the right category for the transaction, I'd like to press tab three times and navigate to notes, and type the note and enter, so I don't have to use my mouse so often. (also navigating through the cells with keyboard arrows should work as well).
The exact behavior was from my habit from using YNAB for a while, and I'd love to see this in here as well.