I think one huge benefit is the "instant"-esque nature of a find as you type fuzzy search in a GUI. In Bash, you can do incremental (find as you type) history

I think one huge benefit is the "instant"-esque nature of a find as you type fuzzy search in a GUI. In Bash, you can do incremental (find as you type) history search with Ctrl+R. Something analogous for grep would be fantastic. Displaying more than one result at a time would also be great. Another thing that grep/find lacks is a index that could make large fuzzy searches faster, but clearly that can be added too.