Thanks so much for the detailed feedback and questions! We've updated the rules based upon your questions, but here are some direct answers to hopefully address the lack of clarity.
1. Yes, only pista card can be placed at a time or "Limit 1 pista in play." We want the Narco player to commit to a single landing strip so that it increases the chance FAST can accurately plan and intercept.
2. Good catch! It should be muni icon or "on a muni with no die." Fixed.
3. You deduced correctly. Discarded cards do not return (unless it's one from a tie). Step 2 in the Op procedure has been rewritten to clarify that it's cards in hand only that are used to create a stack.
4. Really great question here. Standardized the phrasing. It's always "draw intel" as you're never supposed to draw from the Narco's hand and only from their deck in order to progress the FAST victory condition.
5. Yes, interdict basically "teleports" Policia from any hex (it's supposed to abstract Policia getting into FAST Hueys and flying to that destination). Rules have been edited to reinforce this point.
Quick note on "soloing": I'm not really sure it's possible considering how much hidden information is involved on the Narco side, especially during the Operation. But let me know if you figure out a way to two hand that doesn't require forgetting your own moves hah. Anyway, thanks again for the feedback. You've seriously helped improved the game and we look forward to trying out some of your submissions. Hoplomachos looks particularly enticing.