You can certainly control the sort order on a per project basis by tapping or clicking the project name in the title bar, from here you can choose to ‘Sort with Earliest Date First’ or ‘Sort with Latest Date First’, is this what you mean? Note this won’t work in ‘On the Agenda’ or ‘Today’ views.
You can’t link to a part of a note yet, and it might be a tricky UI to implement. My advice would be to split up your notes more into smaller ones, so that if you link to a note, you can easily find what you want in a note. Ie notes no bigger than a screen seem to work well.