It would be informative to know what the landowners primary objectives are for having a permit system. I understand the advice that such questions may be better raised at a CNCC committee meeting*, however it's very unlikely I'll get to one of those. I also fully accept that we are allowed to cave by the good grace of the landowners and if they want to carry on with the current system then there is no reason for them to change. However when a system breaks down to the extent it seems to have on Casterton Fell, maybe there are better options.
For example if a concern of the landowner is liability, is a permit any better than a prominent notice just inside the cave entrance stating that by entering the cave you agree to indemnify the landowner through appropriate insurance (obviously IANAL, but it must be possible to find suitable wording). Presumably conservation issues could be similarly addressed. This would at least bind the pirates to the same terms as the rest of us.
I also wonder if it is partly about a question of scale. Land owners may be concerned that there will be hundreds of people tramping across their land day-in, day-out (as is the case with walkers on the popular fells). In reality caving is a very much a minority sport and I would guess a busy weekend in Easegill only sees a few tens of people underground.
*but then again we are fortunate to have a single, well run, web forum for cavers in the UK so may be CNCC committee should give this forum some weight in its deliberations?