The airline employees (not just flight crew) that hang out here generally reply to threads with relevant topics even if they're not specifically labeled "Ask the [job title]." Such questions are generally posted in the TravelBuzz forum if they're not specific to any one airline, or in the appropriate airline's forum if they are. So, just post your question with a suitable title. If any airline employees feel like responding, they will. If they don't, having it in a separate section won't help.

You might also look at this "Ask the Pilot" site. Its owner, Patrick Smith, posts here under the handle GateHold.