I personally believe the matter of duration is a bit faulty.
If you die, in whatever situation, you enter the world as ghost and wait for or look for a rescuer. If you're stoned you do the same, with the difference you just wait standing in a spot.
If you are stoned the risk of being turned in crumbles means a high chance of closure, but this happens also in any other PVP situation with any other accident which may happen, so I don't see it any different from another death. As Mayvind has pointed out, though, it's the real and only spell vampire spawns can be worried about, and even then there are some ways to escape from a "final solution".
As far as low magic. I think sometimes one should repeat this everytime 10 or more new players come to join POTM. Ravenloft is NOT a low magic setting, it's in fact a very high magic one. Low magic items setting should be a better definition, but it's not that either. The overall point is the -attitude- towards magic of -Barovian- populace: they're afraid of it, they tend not to use it, they escape it when they can. This doesn't mean magic doesn't exist: most Darklords, Strahd included, are high level spellcasters. The real difference, and on that I believe something could be done, is that you should not find at merchants shops (yeah also in the PCs' ones) high magic items. There are many corners in the Barovian side of the server where magic is tolerated, used, sold. Then if we speak also of Dementlieu and Hazlan, we enter in a totally different topic, with attitudes to magics which are different.