All the concerns about the public having access to your live location are entirely justified, and it continues to be outrageous that this is the case - they'll fall over themselves backwards to protect the 'privacy' of the miscellaneous general public, but will happily sell ours down the river to anyone who wants to look or track us down and steal our stuff...
4 and 5 are probably both a bit sillier - why would you possibly consider lending your drone to someone you knew didn't care about laws ? It's your ID on it, and you could be held partly or wholly accountable for his recklessness !
6 probably wouldn't be an issue - if a country stops requiring it, firmware updates should allow it to be turned off - even now my
M4P can do Remote ID but doesn't because it doesn't have to (yet). Of course that may not apply if your government's political paranoia prevents DJI updates any time soon.
Attaching a subversion device to the drone itself is asking for trouble, like if the police compel you to land for any reason they will find it unless you are very quick off the mark, the thing is instantly removable and they are particularly unobservant ! At least if you are going to do that have it in your pocket, and find a solution that spoofs it not by blocking signals but by inventing 100's more, not that I would ever condone such behaviour.