The Creator Studio is a pretty big miss for Apple. Pages, Numbers, and Keynote have always been productivity apps, not creativity apps (and there is a difference). Of the remaining apps, Pixelmator Pro is the only one that is remotely relevant to my needs, and I'm not subscribing to a $12.99/mo plan just for Pixelmator. Compared to $19.99/mo cost for a much more coherent set of Adobe photography and imagery tools, it's a no brainer to go with Adobe. Not the outcome I would prefer, but a bunch of audio and animation tools will be functionally useless to me, so I'm being asked to pay $12.99/mo for a photo editing app and some productivity tools I already have. I'm sure there are some people who will benefit from the breadth of the Apple bundle, but I don't expect there are THAT many.
The fact that it is impossible to get Pixelmator Pro outside the bundle just makes the situation more ridiculous, unless you want the legacy version.
Create serious pro/prosumer tools for creative verticals again (Aperture, you are dearly missed) and you'll have my attention.
It's not bad value at AUD$4.99 per month (education pricing). I only really use it for Final Cut Pro though.