As has been mentioned numerous times before, the 'naff' roads are going to be improved, with a dual carriageway planned right up to the airport from junction 10. Also in the planning stage is a rail link from Parkway station. The new owners are experts in roads and construction so I'd expect the rubbish road layout around the terminal to also be improved.
The airspace needs to be drastically reworked - but I doubt this will EVER happen in the next 5 years.