Ok lets think this through. Since you seem a tad emotional on this let me help with some rationality....
Lets assume that every rule you laid out is indeed a rule that jw’s insist be followed.
now lets remove shunning from the orgs arsenal of weapons.
with those parameters established, lets now say publisher morpheous f**ks the hell out of a woman he is not married too... maybe gisele bundchen. Given that he banged a supermodel, lets say he comes to the kh and brags about it ( and yes i definitely would). Without the threat of shunning, what are they (any jw) going to do about it...?
See how that works? Shunning is the ultimate threat to a jw. It removes all friends and support (remember you cant have worldly friends!) and also takes the hope of paradise.... if you remove that threat whats to keep you walking the jw strait line?
In short the jw cult becomes just another church, a social group. As i already exained, its a social group i was born into. I would go back, nominally, for the social ties i forged over a lifetime, as many here would. Also perhaps you should google the word “nominally” as i expect it will shed some light on what i mean.