It would be a good assumption that if MS are doing all this work for TS, then it'll end up in FSE. I would guess that we'll see a lot of high quality ramp rats etc, with some low-poly ambient passenger folk.
And I bet that someone somewhere is building a library of 3D people for FSX. Lately I've been looking at this area, as I needed to make one character for a mission. Here are some things I've learnt from the experience:)
1. There is a huge online community dedicated to what I call 'dress-up dolls'. There are some basic 3D characters available with tools such as Poser, and people design/share/buy/sell clothing and accessories for them. I would think (and hope) that most do this to flesh-out their 3D scenes with realistic people, but I suspect that there are a lot of virtual dress-up girlfriends out there...
Here's a Wikipedia article, but I could have just as easily linked to an online store selling tongue morphs. (Don't ask.)
2. The MS article makes some really good points -- I wish I'd read it before I began, as I needed to figure out a lot of things myself. 3D people need to be animated, otherwise they look like statues, and it isn't as easy as you'd think to make a life-like animation --they mention using motion capture, but I've had to do it the hard way -- not really too successfully.
3. Getting a model out of something like Poser into GMAX is easy enough once you know how, but getting to that stage took me a few weeks. Then you need to get to grips with the concept of bones to animate -- basically you build a skeleton, link vertices from your 3D person to the appropriate bone, then animate the bones. Ideally your model will move with the bones in a life-like manner:~
4. A SDK tool that turns 3D people into animated FSE characters would be nice:)
Deane's comment is spot-on, it is quite creepy -- and unnecessarily low-tech -- to do a mission with an invisible co-pilot or passenger. People used to other modern 3D games would think there's something wrong with their sim when they come across this for the first time.
Having followed the wikipedia link I am amazed at the number and variety of the products being advertised for Poser figures etc.
It seems strange that no-one has seen an opportunity to populate the FS World with such figures (whether animated or not). Afterall we made do with "cardboard cutouts" as sort of placeholders for something more realistic.
It is the "Mary (Marie) Celeste" effect at some of the superb Airfields being produced these days that really irritates.
I am glad that you think Microsoft will include more people next time around Robin but if anyone can produce any sort of figures in the meantime it would be much appreciated.