For an airport that has no elite lines - or for the security checkpoint in general: When the TDC does the ID/BP check, they should look at the BP for an indication the traveler is a FF - look to see if ones FF status is printed on the boarding pass.

Upon seeing elite status printed on the BP, send them to the expert lane. Then send families and such to the "slow lane" and most others to the middle "average lane"

If an AA boarding pass reads "Platinum" or "Plat Exec" .. or "EMD or Emerald" or "SPH - Sapphire", send them to the expert lane. Chances they have the drill down. CO/DL/NW BP's that show "SkyTeam Elite" or "SkyTeam Elite Plus" - again FF's who likely have the drill down.

How an airline reflects ones FF status on a BP can vary a bit per airline, all of the programs have different terms - but they should be easy to pick out. When assigning lanes to non-elites, have the TDC look to see how much carry-on luggage the passenger has.

If the checkpoint is located well after the TDC, have the TDC write "B", "Y" or "G" on the BP so they can be directed to the black, yellow, or green line. I don't know how well this would work, but given the TDC reads the pax info on the BP, let them assign a lane.

At SDF they have an "Express Lane" for "One carry-on item (or less) only" -- this line often seems to move faster, but is easily mucked up by a kettle that has never heard of the liquid ban, doesn't know the process, etc.