1. You can also review the grid detail by selecting the desired rows, and then using ‘right-click > expand rows’ option. I think this would probably be better for what you are describing. We probably will not create a keyboard shortcut for viewing cell content because then you would have to tab through soooo many cells to get to the one that you want to view. ‘View cell content’ is really more geared to just be a mouse option, not a keyboard option. This is why for your needs you might find it best to use the ‘expand rows’ option instead.
2. The ‘All Messages’ column sorting is already only based on the visible content. We’ll have a look to see what we can do to improve it.
3. We will consider your other suggestions for a future build. Thank you for the feedback.