I've written in DADGAD, open Am and open Em. The open tunings are OK for easy barre chords, but what I like to do is cowboy-chord shapes and then take them further up the neck. Haven't a clue what chords I'm playing, but they can really be interesting.

The issue is remembering what tuning for what song, being so disorganized. I'm my own guitar-tech and only have one guitar.

BIAB 2021 Audiophile. Windows 10 64bit. Songwriter, lyricist, composer(?) loving all styles. Some pre-BIAB music from Farfetched Tangmo Band's first CD. https://alonetone.com/tangmo/playlists/close-to-the-ground