Purchase each background separately or purchase a section of similar style backgrounds.

You can already do this and it tells you how on web page. Pdf import + highlighter is $5, tool pack is $3, and our backup is $3. The only thing you can't get is the backgrounds. It offers it as premium or just this feature in the bottom left when you try to access it.

While the Premium Package is very affordable, it would be nice to be able to buy only the features that I need. All the background packages sound awsome but having to sort through a whole list of them to get to the ones I actually need, or paying for a cloud I won't use to have access to brush options that I do need is very annoying and off-putting. I really don't mind buying features, I just would like to pay for the things I do want and will use and not have a lot of other features cluttering up the app.

If I am an engineering guy what will I do with music and sports templates and vice versa. Allow for purchase of templates by groups atleast. If every app changed to subscription model I would end up paying 100$per month.