This isn’t the best time to start a new Luton based airline. A combination of 18 months of road works from the airport to the M1 and 3 years of road works on the M1 around Luton means getting to and from Luton can be a nightmare.
Perhaps so for the plebs amongst us: but no doubt if you can afford to at fly premium rates long-haul across the 'pond' (or to/from DXB for example) you can (and will) share a helicopter to/from Battersea. Northolt, Elstree, etc., and a limmo to take you to/from your ultimate destination.