What is limited is terminal-accessed stands. That would not be improved if the hangar line or Easy's hangar was incorporated into the CTA. My view is that the only alternative is a second terminal, which would have to be on the area of the old Council tip, and linked to Parkway station and the M1 by an extended mass-transit link and road tunnel.
The alternative is to extend south of the runway, and there are LBC/Hertfordshire complications in doing that.