It's been nearly a year and this hasn't been implemented... This isn't a deal breaker of course, but there are so many times in the last year I've wished I had the option to group states!
It's been a while, but I seem to remember Houdini had some really cool ideas when it came to creating inputs/outputs to their grouped nodes. It was all very visual and only took a glance to figure out what nodes did. I believe there was an option to create templates out of the groups and drag and drop them into new networks.
I've been using Amplify Shader and there's nulls that users can use to pin the noodles. This is so helpful! I've created a couple huge networks in Amplify, it definitely isn't as truncated as Playmaker, and those pinning nulls are absolutely necessary.
Thanks again for this great Asset! I've been using node based software for a while and Playmaker felt familiar and easy to use from day one!