Or - even more radical - change a few of the peaks for alternatives. That would alter the route to avoid the badly erroded parts the ldnp are concerned about. Add in bakestall and little calva on leg 1, take out fairfield and st sandal on leg 2. Make ulscarf the first top on leg 3. A bit of tweaking around the rest of leg 3 and 4 to ensure distance and ascent remain roughly the same. I dont think this is the answer by the way, but it could be an option for a limited time to allow the ground to recover.

The 42 we do now are not exactly the same as the 42 that Bob Graham did iirc.

Or we accept that erosion is inevitable and it would then be down to the ldnp to take action.