I second this suggestion.

Batch Replace needs item descriptions.
And I need this list not only for batch replace.

Actually I seldom do batch replace.
So I use this list as “Search Favorites”, since EmEditor doesn’t have (a real) one.
By double-clicking on an item in the list, the pair are sent to the left board, and the options are set. Very handy!

Please consider adding a Description (or Title) column.

(Markers have Titles. But Markers can not store replace pairs.)
(I also have some suggestions for Markers if Yutaka would like to hear.)