A few suggestions that I think would make the search plugin much more useful:
1) Display the line text in addition to the line number. Often I just want to see the lines not actually navigate to them. It would also help with finding a pertinent occurrence rather than looking at each line. It would also be helpful to be able to show only the file/buffer name rather than the full path. The full path takes up too much space. Often all of the files are in the same path as well. The current setup requires expanding out the file column to actually see the file.
2) Create a function that will allow searching on the currently selected text in the active buffer that could be used with a hotkey. I often want to see other occurrences of something that I have selected
3) Allow rearranging of columns and remember resizing of columns.
4) Allow an option to search all buffers or only the current buffer. Right now it only allows all.