During the lead up to the launch of the COBOL track, and inspired by the GoBridge thing, I made a couple of informal representations to members of COBOL vendors/trainers. It might have made more impact at the time if it had been more formal and with the backing Exercism itself.
@rhinotastic 's idea has legs. I’ve been mentoring some COBOL students recently and there’s definitely skill out there. That said, one doesn’t want Exercism to become a pawn/mouthpiece of MicroFocus or IBM, but @iHiD has done a great job of maintaining independence so far.