I think they should add a few new titles, its been a while since they have. These are the titles i think they should add (if already suggested sry didnt see).
- World Explorer - This title series should follow the Tyria and Cantha exploration title series but should be for exploring a percentage of both continents. This would be a good title for many people have over 60% exploration or higher on both continents but can only have Tyria or Cantha showing at once.
- Boss Hunter - This title series would be a title that is awarded to players who kill a certain amount of bosses (colored aura monsters). The first title could start at killing 100 bosses and then from there increase by 100 each level. This would just be an awesome title to hold so you could brag that you took down hundreds of bosses.
Other then these titles my only title suggestion is the ability to check a characters information to see all their titles. I like the fact that you can only have one title showing in outposts/town but i also wish there was an ability to check all of someones elses titles. So i would say to keep the idea that only one title is visible but that if players want to they can (possibly in the trade window) check the players title information.
The problem with world explorer, is that you could never max it out. Even if you got 100% explored now, when Nightfall comes out, it would drop drastically.