I might want something like this, too.
I guess it's not possible to do this in the blockchain level right now? So there needs to be changes in the blockchain and in the UI which are separate issues. In the future there will be other UIs also, so it's better to think this first on blockchain level. When the best function is founded, then think about how to implement it in the UI.
I'd guess maybe five steps might be optimal: 20 %, 40 %, 60 %, 80%, 100 %. Maybe even four or three. Maybe five first, and then look what percentages are used most and drop everything else?
the blockchain already supports 0 - 100% and everything in-between. You can do it manually with the CLI, it's just a matter of what would work best for a steemit GUI.
Oh, cool, I didn't know that. If it's in the blockchain already, it of course makes everything easier.