Knowing different versions of chords is really improving my lead playing - especially as you move chord positions up the neck.

When you're forming a chord, each of your fingers is sitting on a chord tone. Even if I'm not smart enough yet to immediately name which tone it is, my ear tells me that the note "fits" . I can noodle around where these fingers sit and build - admittedly simple - lead runs. But it's music to me ;)