Great appetiser. Now I'm salivating.
As a thought for missions, are you familiar with Sigma Theory - especially the 'Extraction' phase. There you have chases, but at a remove - you can only guide the agents on the ground, not control them.
Viewing post in The Game of Silent Weapons (Short Version) comments
Never heard of Sigma Theory - at first I thought you were talking about like "sigma male" crap - and it certainly looks interesting, though a part of me is worried to check it out too closely, it looks very similar to Silent Weapons in a lot of ways and I wouldn't want to risk plagiarizing it.
Anyway, the long version of this post will get into full details of what the tactical missions will look like.