But more often than not there are zoning issues that cause delays and make the timeframe much too tight.

Since it was a single lease, any eviction would apply to all three, not just the one causing issues.Now, the families are trying to negotiate a mutual release agreement to avoid a full-blown eviction.

Possible causes of mold:1) No exhaust fan, so water vapor collects on the ceiling and mold grows.2) Exhaust fan installed, but venting into the attic or inter-floor space.3) Water leak above the bathroom ceiling- Roof leak- Water supply or drain line leakHere's info on the missing washclothe bar:https://theblacksheepshoppe.blogspot.com/2023/10/how-to-repa...

But I wonder, is it required that you pursue 2nd cause and get a court order for a judgment in order to turn a debt over for collections?

Some things that could harm morale (more than it would harm financially) are an early eviction, nightmare tenants, unforeseen foundation issue, conflict with a neighbor, etc.

Similar to appliances, getting parts for repairs is causing significant delays.

Agree with @Marcus Auerbach unless something unusual is in play like the sketchy lending practices we saw years back that caused RE bubble to burst I envision the ebbs and flows as more subtle based on supply and demand.

Does NJ allow no cause?

Either in person or hire someone to walk it and let you know what is tenant caused damage and needs to be fixed. 

I have better things to do with my time than fight over mediocre crap shacks at top dollar with people like you.Also you're a real estate broker shilling for clients on biggerpockets and I'm basically retired at 36 so who's the failure here cause it ain't me.