The other three were pretty much traits of every major traditional religion at its founding.
Some coercion? It was entirely external pressure. Some of the mormons haven't even stopped polygamy today.
Using the term 'Mormon' to refer to the the entire family tree including splinter sects is just a recipe for confusion. Adherents to splinter sects, excluding RLDS, number in the tens of thousands compared to millions of CoJCoLDS. The problems with CoJCoLDS are damning on their own without needing to conflate facts with fringe groups.
You should research polygamy in the mainline (Brighamite) sect if you haven't already. One of the last marriages to the the mormon prophet Lorenzo Snow was to a 15 year old. Snow was 57 at the time. This was not normal despite any assertion about children working.
Source: www.reddit.com/r/exmormon/comments/1c2omo0/the_wives_of_lorenzo_snow/
I think this suggests that all major religions are cults, rather than that Mormonism isn't. The lines are certainly very blurry.
The purpose of a system is what it does.
I have very close Mormon and ex-Mormon friends and have dealt with lots of Scientologists via community involvement in music and science fiction...there is no difference.
A married couple that are friends of mine had minor questions of faith and their entire large extended families with immediate no-contact. It was bitter, brutal and painful even as a bystander seeing it happen in real time. Their young children were cut off as well and their families hounded them and made their lives miserable via institutions (police calls, anonymous complaints to their schools & jobs, etc.). The behavior was beyond the pale and this couple are literally the nicest, most loving and reasonable people that I have ever met.
They switched to a different Christian denomination and raised their kids that way and couldn't be happier about their decision. In hindsight. The family wounds 20 years later are still very visible and real.
It's good that you're friends made it out of the cult.