Skritter allows you to study multiple lists simultaneously. I’m curious what you see as the difference between adding two lists to your studies, versus remixing them into a single list?
On my study docket, I have HSK lists, NPCR lists, lists from my tutoring sessions, lists from words I come across monthly, and others. I’m so used to working across lists, that it seems odd to want to mix them up into any type of “mashup”.