Q400s sometimes operate from the shorter runway 03/21 at IOM which is 1255m long, so SZD at 1211m surely would be feasible. At least DSA is available nearby for diversions in bad weather! F70 ops to get KLM back might be trickier, but there's space for a short extension to match LCY I'd suggest. I hope the petition succeeds as it would be a criminal waste to dig it up after it was stolen from the council tax payer. Hopefully one day there might be some money around to get it going again - there's a rail line right next to it so it would be easy to add to the tram network. It would be of great benefit to the Advanced Manufacturing Park which is developing apace across the road.
https://maps.google.co.uk/maps?q=she...94641,-1.39090