Eeee...when I were a lad, I spent many a summer holiday on the terminal roof with airband radio and enjoyed just being close to aircraft and learning what was going on.
For security reasons it was closed some years ago of course - which is a shame in my view. How many young people now don't get the chance to be inspired into aviation by 'spotting' or have that magical invitation onto the flight deck while going on holiday with their parents?
Why can't all major airports have a 'proper' enthusiasts area? Would people be willing to go through some sort of security and pay to have access? I can imagine a nice 'roof' area at many airports close to the runway making a charge for entrance and with food and facilities?
Why not?
Is it something I should pitch to Dragon's Den
