1. Continuous network of physically segregated bike lanes.Then you need different traffic signal patterns, because no turns can take place when the bike lane has a green signal. (When bikes ride on the road, they can be in the middle lane, so as not to conflict with right-turning vehicles. When they are segregated, this causes many accidents without a new traffic signal pattern.)
2 through 4
Agree.
5. Abandon helmet laws and stop talking about 'safety'. The most reliable way to reduce the number of injuries is to increase the number of cyclists, and mandating helmets/kvetching about safety creates a false perception that cycling is more dangerous than driving (it's not).
Helmets are not for protecting yourself from cars, they are about protecting yourself from yourself. I have gone down hard on my head a few times, and that's no fault of any other vehicle (only poorly maintained roads). The helmet has been very helpful for that. (It also keeps my hair out of my eyes. Doubleplus good.)
In the end, the problem is that most cyclists drive unsafely and that they are not aware of the risks. (Or what "driving safely" even is. They just guess... and get it wrong, and never think to maybe read a book about riding safely.)
(Many inexperienced cyclists are afraid of being hit from behind, so they ride too close to the parked cars on the right. Then some idiot opens their door into them, and they end up in the hospital. This is much more common than being hit by behind. Similarly, cyclists afraid of the street ride on the sidewalk, and then they get hit by a right-turning car. This is one of the most common type of bicycle accident.)
Anyway, we really need to make people aware of these issues, and we need to significantly reduce the speed limit on urban roads. (Most people seem to drive about 35-40 near downtown Chicago before it gets too traffic-y. The speed limit should be no greater than 25; then bikes and cars are almost at the same speed. With the timing of traffic lights, the overall speed isn't much higher than this, anyway. If 25mph is too slow for you, park your car and take (grade-separated) rapid transit!)
My prediction is that this never happens, as recent legislation has been aimed at reducing the rights of cyclists. I doubt we will be able to reverse this trend; in 20 years, it will probably be illegal to ride a bike on the streets my taxes pay for.