How many places do we know where gliding and GA, rescue choppers etc operate happily together? Here in the UK, I can immediately think of gliding coexisting with GA at Bembridge, Tibenham, Booker and Yeovilton. On the continent, there seems no problem mixing all the above with commercial traffic as well: gliders cohabit at Innsbruck and Luebeck (Blankensee - RyanAir's 'Hamburg'), and gliders, GA and rescue choppers lived happily together at Trento. Notably, many continental airfields are run by the local authorities as a way of promoting regional development.
Lee would be by far the most convenient airfield for the now rather substantial population of Southampton/Fareham/Gosport/Portsmouth; one can certainly imagine a significant business activity, and it would be a splendid base for round-the-island tourist trips as well as flying schools like Carill and maintenance organizations like Thruxton Aviation. Hard runways, clear airspace, good road and transport connections, plenty of interest nearby - not many airfields can boast all that!
Good luck to all at Lee that are campaigning to keep (and broaden access to) flying there.
Windrusher