Guide to Regrinding Camshafts

Please do not respond call your camshaft company!! That is not the intent of this post. The goal is to give some prior knowledge of what can be achieved with a camshaft regrind before calling the cam company.

The way the world is going, being a small hoarder and having stock camshafts on the shelf may come in handy. Camshaft shortages are getting ridiculous to say the least. Does anyone have a link that goes into detail about camshaft regrinds? If not can we start a detailed thread here? Below are some of the things I've been wondering about with the stock mopar cams and a regrind:

1. If I know the lift of the cam what is the max lift a regrind can give? (Same goes for duration)
2. If a hydraulic flat tappet cam is reground, can it be grinded to utilize roller lifters? (For example, to put an LA cam in a magnum engine and use the eccentric pump)
3. LSA. I assume this can not be adjusted and is built into the cam. Or can 1 degree of LSA change be achieved with a regrind?
4. Convert hydraulic camshafts to utilize solid lifters? (I'm assuming no to this as well)

Any other questions?