I know what you are looking for, but I can't see it happening any time soon
Do you know that you can enable extended tooltips, by right clicking on the title bar over the search screen, and hovering over items in the search screen willshow the id3 tag details. Most of these can also be seen by opening further colums in the search window. Only thing is theres not eough room for them all
This does not improve the Limewire search function, I'm afraid, but makes it a little easier to live with