I know Mould has already commented but I will shed some light on the maps you mentioned as well. I did want to put the effort in to make them playable a while ago but these were my reasons for not doing it:
1. In most cases we had to decompile the maps to edit them, which messes with the collision and other things.
2. Those maps don't look nearly as good in game as they do in the video even with high settings.
3. In general we only edited the areas of the map that were in shot, so it was only ever half-done. I think I actually did the whole of product though, but I had to use viaduct pro RC7 because that's the only one that works in SFM.
I can only comment on what we did a while ago, and there are incredibly talented people working on those refresh projects so i don't doubt they could do something like this given the time, but hopefully that sheds some light on many of the difficulties we were having before.