SP Modern Pages Limitations

Here is a collection of what is currently not supported with modern team sites: https://msdn.microsoft.com/en-us/pnp_articles/modern-experience-customizations-customize-sites?f=255&MSPPError=-2147217396&utm_content=buffer6cdb3&utm_medium=social&utm_source=twitter.com&utm_campaign=buffer

The modern pages have only a subset of webparts currently. The big thing missing is the list view webpart and CSWP.  Hope these will be added soon. 

I dont seem to be able to add content to the NewForm.aspx page and keep it "modern".  If i create a new form, based on the New form type for a list, its the old style..

Any ideas how to add some text/desription/content at the top of a NewForm.aspx modern page?

I'm working in SharePoint Online and I seem to be unable to get the audience targeting settings to work in my list with the modern experience.  I flip my list to the classic experience so I can edit the web part settings, expand the Advanced section and enter the appropriate group in the Audience Targeting.  It seems to work great with the Classic view - a user not in the audience doesn't see anything on the page - but if I switch the list back to the Modern view that same user DOES see the list items on the page.

Anyone else run into this, or am I doinig something wrong with the audience targeting with the modern view of my list?

Thanks!