Crimson Longinus
Legend
@hawkeyefan @zakael19
What's not clear to me is: can the GM introduce new complications/obstacles that aren't already implicit either in (i) the planning, or (ii) the gathering of information, or (iii) the working out of clocks, or (iv) the outcomes of rolls?
My impression is that the general answer is no. But other posters seem to think the general answer is yes.
They can. There is no specific restraints for this. Notice how no one actually really addressed my specific examples of how it is determined what and how many obstacles are present? There is no concrete rules or guidelines for this, it is just up to GM.
Also, gather information is rather vague. You can take actions to have the GM answer questions, but how much information you get and what it is is up to the GM. It may also include the GM "offering opportunities" which are not unlike so called "plot hooks" in many other games.