The Elephant in the Room (she/they)
The thing about Vitality/Wounds is that it doesn't work super well to port directly into D&D. Star Wars d20 made a lot of additional changes that impacted the Vit/Wounds system, including:
- Crits were a range with damage straight to Wounds rather than bonus/extra damage.
- In addition, this was back in d20 where crits had to be confirmed, making them relatively rarer
- Armor was also completely changed, providing damage resistance rather than AC.
- Defense was now a class feature that went up with level