I can't relate to some of your problems but here goes.
1) yes there are redundant notifications if you choose to set reminders.
2) how often would this be an issue?
3) I do not use Bluetooth as a courtesy to the receiving end (I can always tell when someone is using Bluetooth).
4) I have noticed that the Nav does show when I restart the vehicle.
5) yes, I have that also along with other owners.
Skipping 6,7 and 8
9) yes it is a problem we all have to deal with.
10) not sure what the difficulties are, you just key in the address.
Hope some of this helps, welcome to CL