Alloy, had the runway have been extended years ago, then I am sure the airport would have surpassed the 18 mpa figure already!
I estimate (from Google Earth) that perimeter fence to fence from each end of the runway there is approximately 9000 feet. Surely with a bit of landscaping they could extend the runway to at least 8000 feet? This would leave runway 08 end to still have a stop area, and 26 end to have a ramp built containing the lighting system and being used as a stop way (if ever required)?
The difference of 1000 feet could make 787's viable?