Sorry for the guidelines, but I don't think it will happen anytime soon.
I prefer to improve magnetism, even if you don't use it
The compass is part of the base plan because this item is for documentation purpose like dimension lines. I guess you must change it quite often to improve the lighting of your nice renderings, but in the spirit of Sweet Home 3D, the compass is not supposed to be changed once set, like the real orientation and place of a house.
As I chose to add Plan > Make level the only viewable one and Plan > Make all levels viewable in the coming version (features that you requested in the past), I prefer not to add also a Edit > Select all at selected level menu item, because I fear it could be confusing. Choosing Plan > Make level the only viewable one then Edit > Select all will have the same effect.
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Emmanuel Puybaret, Sweet Home 3D creator
