I certainly won't ever be completing this run, simply due to the massive amount of time making a good built run takes and the number of other ways I could be spending all that time.
If any person(s) wishes to continue the run then they are welcome to, however those involved would probably need to have some amount of experience at building demos (or have to spend a bit of time practicing). If you really want an optimal demo a strategy where multiple people all work on the *same* level and then compare timings throughout the level could be interesting. I know when I was building these I would have 'segments' that would allow me to compare times of my run, my previous run and andreys run to ensure I was being optimal. Segments would typically be things that you paused at (such as starting a door to open, triggering an event, etc) to avoid scenarios where taking a tic longer in one segment made the next segment 5 tics faster. The idea being that ever segment should be faster (or at the very least equal) to the segment in the previous run. Having multiple people run the same levels/segments could lead to some pretty optimal times (with the usual problems of ammo, health and route planning). Although this would probably take longer than a single person running it, you could possibly get a better result with every individual having to spend less time on it.
Also whilst I do like Map 01 in that demo, please remember that it isn't mine (not to mention map 08 is way cooler and saves more time :) )