This is a genuine question, not a challenge - can you describe a few of the things that you use Split View for?
I am currently back on 8.4 because PB2 was killing my battery (unlike PB1), but was really impressed by how well Split View worked - I just couldn't find to many real world uses for it.
I do think Split View will probably become much more useful after it expands beyond native apps when it is released in final form.
Personally, I use(d) it before taking notes and writing articles for a website in Notes while referencing a source in Safari. I've also done the same for taking notes during class while looking things up in Safari. That'll probably be my main use for it, but I'm sure when dev release split view support updates in the fall I'll find more uses. Ideally, I'd want to use a different text app than Notes (maybe like Wordpress, Pages, Drafts, etc).