Much as I agree that "cyclists fucking about are perfectly capable of causing cars, or more especially motorcycles, to crash causing damage and injury whilst taking avoiding action" I'm concerned by your mention of registration markings or compulsory insurance.
The former just won't work. Not for an object that gets thieved as often as a bicycle - plates would be faked as a matter of course, and while it's easy enough for police to check that a car plate matches a particular make and model, I don't see it likely that they'll be able to spot a Conic from an On-one anytime soon. The latter is also deeply concerning - how would you balance trying to encourage (for example) children cycling to work, by then creating a huge administrative and financial deterrent for people?
I'd much rather the police enforced the current laws as hard as possible, and cyclists put up with them until we campaign hard enough to get them changed. Cyclists shouldn't make arbitrary decisions over which laws apply. They should follow the highway code, they should stop at reds and in the event that they choose not to they should be hit by a fucking enormous Scania. I am an avid cyclist, both for commuting and leisure, and I appreciate it's a pain in the tits, but that's life. The productive choice is to join a cycling group that lobbies for legislative change, whilst at the same time following the current laws just to undo the various negative stereotypes that cyclists are accused of. Ignoring rules just because you think they shouldn't apply plays right into the hands of all those people who'd prefer to see bikes forced off the road.