>>17
You seem to be describing some form of direct democracy which most governments have considered and experimented with. It could work at the local government level with referendums for major national issues in conjunction with a regular representative democracy to plug any loopholes that emerge.
>>18
For my constitutional monarchy I would rather arm civilised citizens and disarm unreasonable savages, rather like the Tokugawa Shogunate allowed loyal samurai to have weapons but disarmed the peasants, this way you don't get private armies setting up their own little fiefdoms and starting civil wars. After 100 years of instability and constant war you'd feel the same way. I suppose you could have a law saying you should be allowed to have weapons unless you're a criminal.