P: More sophisticated slideshows please

I was asked to post this commentary here having first posted it in Help for Slideshow; I think they didn't want to deal with me. But, here goes. The Slideshow module is probably the most important sharing component of your program for those of us choosing not to print and file photos. Yet, and in spite of its few "canned" graphics, it seems to lack many useful edit features; at least ones equal to the quality of pictures that Lr3 can help produce. 1. Though Lr3 allows movie clips to be imported, "slideshow" will not play them as part of a combined show. 2. Although a soundtrack can be added, adjusting play time is by means of a primitive slider. 3. Sountrack only allows one track to be imported. That's probably okay if one knows how to create a track somewhere else (Garage Band, et. al.) and import it for longer shows with subtle shifts in content or, if one is willing to put up with a loop that may not match the show in length. 4. The soundtrack does not mate to the show which means the show cannot be stopped and restarted because the soundtrack defaults to the beginning regardless of the image one has stopped at; this is a pain in the @$$ for the editing process because it means one must run a complete show each time a make minor adjustments of timing, as may be required; and that can mean many hours if the show is anything like 20 minutes.
I am sure that I am not alone in wanting to share my high quality, Lr3 images on a high quality TV or digital projector, where a small group can see the show together. I don't wish to print images or books of images to pass around and later have to store. And, I don't want to use the default "iphoto," "iDVD" program combo, which allows movies and stills in the same show and easier adjustments to match images to a soundtrack. Why? Because it is a weaker aid to creating quality images to begin with and the quality is lost when transferred to a DVD.
So help us out here. Fix these problems or . . . maybe I just don't know how to get at what's already available in Lr3 and you can tell me. Some of us want our albums on DVD with all the bells and whistles and we want the tools to make them as rich an experience as possible.

Thanks for your patience.

J. Naughton