On the Search Results page - I'd find it useful if I could see the first post date and the last post date for each of the posts in the record set. T'would help me save time. Not a high priority item considering all that's on your plate right now!
Actually, a new site search engine has been in testing. We are at over a quarter million messages on the system now with 50k primary urls in 200meg of files under the new system. Ever try building an se on that scale? There are few options off-the-shelf. Certainly none that I know of that are cost effective.