I hope I am not about to become persona-non-grata here for suggesting this... I have started using a small portable home land parcel in A.N.Other competitor world and I *really* like the feature! It's so easy to get away from undesirable neighbors without making any sort of financial loss from having to sell, and if you want to, you can pick it up and put it in your inventory - complete with house and possessions - every time you log off, which means you are not actually paying ground rent in between sessions, only for the time it is actually set down in a location.
I am not suggesting for a moment the normal land zones should be changed, but it would be great if SL could set aside "camp grounds" on the mainland (or for that matter private estate owners could do so too) where this feature could be used.