Power does not have to sacrifice intuitiveness and simplicity.
The gold standard of editors was the Neverwinter Nights editor, I'd even argue that the Heroes of Might and Magic 3 editor ranked up there too.
It was simple, yet could be ultra complex. There was a learning curve, but the curve was there to explore what more you could create not just creation in general.
It's been super frustrating trying to use the editors that ship with games now a days. Just for an example, the editor that shipped with Dragon Age: Origins was completely broken upon release and about 30% of the features were broken (like water).
