Reply by Gentile

High ceiling, 10’, 220 electrical, a 110 plug every 4’, a few on the ceiling too, bright lights (LEDs), windows for natural light, sink and a toilet, fridge, heat/AC, dust collection, big enough doors to move stuff in and out, and a shed for yard stuff. You don’t want them to get dusty from wood working.
Lots of great suggestions here from other folks here…
You have a great wife to suggest a separate shop!

-- "I cut it twice and it's still too short"