@mwichary@mastodon.online some really off-the-wall options, there. :-) Did you ever encounter - I forget the name, but in the late 80s there was a brief interest in a 5-button typing system where each letter was produced through a combo of buttons? The vowels were 1 button each and the combos for others were supposed to vaguely resemble the shape of each letter. Never really took off afaik.