The ultimate goal of JW higher-ups is to completely control every aspect of your life, as their puppet.
If they print an article that says the human heart muscle controls emotions, you must believe it. If they print an article that says Jesus was clean-shaved, you must believe it. If they print an article that says you can't get your tubes tied, you must believe it. If they print an article that says you must avoid any education beyond what's mandatory, you must believe it. If they print an article that says you can't go down on your spouse, you must believe it. If they print an article that says you can't accept an organ transplant, you must believe it.
Many of these articles will be printed as "suggestions", but you'd better believe they'll be seen as commands. Since the Watchtower is "God's mouthpiece", ignoring a suggestion in the Watchtower will be seen as disobeying God. No matter how nutty, arbitrary, or demonstrably false a Watchtower suggestion might be, you must obey it or be seen as "spiritually weak" and may get you "marked". If you're in the wrong Kingdom Hall and the elders are on a real power trip, something completely acceptible in another Hall could get you disfellowshipped.
There are many, many articles about "bad associations" and basically that boils down to anyone who isn't a JW, any literature the JWs don't produce, any music the JWs don't produce, any movies the JWs don't produce, etc. Depending on how much they want to micromanage you, it can be nearly anything and whether any of the elders do anything to stop the witch hunt will greatly depend on your popularity or political clout in the congregation.
Any Witness who tells you anything different than this is a flaming liar, trying to score points for the "organization", believing it to be God. There is a very good reason people on forums like this call JWs "the Borg". On Star Trek, the Borg have no independence, no friends, no thoughts or emotions that are not completely controlled by the 'collective'. "Good" JWs are not people, but part of a hive. "The individual" isn't a concept JWs comprehend. Every breath you take and everything you do must be for the good of the hive, and ultimately for the promotion of the collective, which only rewards and enriches the leaders. Outsiders do not contribute to the cause, so they are to be avoided. Anything that will distract you from living your life for the seven old men in Brooklyn is to be shunned.