I know the answer will be 'no'- but follow my logic here. I completely understand grandfathering NMU's for the skills that they should have been learning all along. It will allow them to continue to use the skills that they currently use. I am surprised by the grandfathering of TDP's but I think I can see the rational behind it.
But- following the same logic- Sorcery really should be grandfathered on at least some scale. I really didn't care so much before but following that same logic- Flavius should have been learning Sorcery at a fairly brisk pace for the last 2 years- and earning the tdp's that would accompany it. But at the same time, I realize that none of us use 'Sorcery' as much as regular magic. So I propose Grandfathering Sorcery at a rate of 20% of PM, or even 20% of the average of PM and MD, including the relevant tdp's. The old way of doing things is changing- for the better I might add- and I think under this new scheme, grandfathering Sorcery on a limited basis makes sense.