If there is a factor to assassinate that affects how one approaches the skill, e.g. "stalks count for more when you're in the room with the person", then it would be nice to know about it.

I/we don't need exactly numbers, just some indication that it "matters".

That said, my working assumption is that if something "matters" to a significant degree then it will be explicitly spelled out in the help file. Ergo, if something is fairly counter-intuitive and isn't spelled out in the help file then I assume it's not a factor.