Re-heat
I also hope that flight deck crew do not actively research new aviation fields in the course of their work. I do think that would be a tad unwise, interesting but unwise.
As for the cost weeding out people doing the training on a whim, but still makes it very hard if not imposable for kids with out the money.
V6g has a good idea, if you got a tax break for x amount of years to allow some of the training cost to be recovered. That would work very well with the new cpl holder doing ppl instructing. By having it come into effect when you start earning a wage from flying it would stop what happened with the old NVQ tax relief, when everyone doing a ppl was saying they were training for a professional license.