If I could afford to, I would put together some sets. I just want some basic, universal stuff that could appeal to many, including myself.
For instance, I like how Dolch can have so many different ways to mix colors with it. I think if you have some more standard, neutral, and less saturated sets like Dolch, and then some brighter colored auxiliary sets, then you'd have more ability to make a wider variety of custom sets more efficiently, instead of each style needing a full custom keyset.
Maybe I'm being idealistic though. I have a lot of ideas, but no way to execute them. I'm trying to work within my limits. I thought teal-green modifiers might be achievable since it directly ties in with Dolch.