People are also cashing out all the appreciation they've accumulated 

I feel bad when people get sucked into sub-par turn key deals when there are much better options for investing in real estate more passively like investing in syndications or being a financial partner on smaller scale deals with another investor who wants to put in the work but needs the capital (I partner with people like this). 

Go to meetups, offer to help people FOR FREE, ask for book recommendations, read the books and follow up with the people who recommended them. 

It is a bigger problem than people think.

Which platform are people finding success on or having struggles with?

If you've got to ask if you need a GC, you need a GC.The question isn't whether or not I need one, the questions is what has been the experience for people that flip remotely that have subbed it all out without a GC.

Wouldn't it make the property more attractive to younger people if some of the utilities were covered ?

But sales people will do what sales people do.   

I've been a developer for 17 years on projects across the US and we do both JV deals and consulting based on what is most beneficial for all people involved.

You are just going to get a bunch of people pumping their markets here, especially if they are agents.