The official Dev blog
for Pirates of the Burning Sea states that a major revision of the sword fighting combat system is being worked on. Developer 'Isildur' posts that, "In short, we've been stripping avatar combat down to its foundation and building up again. We've learned a lot from the first major iteration of the system; we know what worked and what didn't, what was fun and what was dull. We've gathered a lot of feedback from you as well as feedback from our internal test team. We've applied that knowledge to create a new system that (in my naturally biased opinion) is much more fun and engaging, as well as easier to learn and easier to use."
The blog post tells players to expect changes to combat initiative, defensive skills, equipment and combat statistics. Additionally, the skill selections will be modified to use fewer skill chains but to have more skills within each chain. The blog promises more details about when the revision will be forthcoming along with an announcement for the release date of the upgrade.