What are the pros/cons for a headless instrument?

Pros: smaller/shorter instrument. They’re great for travel as they fit in an electric guitar sized gig bag. They work well if you find yourself on small, crowded stages (small clubs, coffee houses, orchestra pits, etc..). Sonically, they typically possess a more staccato attack which is great if you play anything percussive. They’re lighter and easier to wear on longer gigs.
Cons; the changing of strings can be a little tricky. They lack a little bit of the fullness and resonance you experience from a build with a headstock. On the 5 and 6 strings; the nut width is a bit wider than my usual spacing via a hand carved nut. This is due to the dimensions the hardware is made to accommodate.