What I would like to see anet introduce in the new chapter are classes which are a combination of already existing professions. for example:
W/Mo - can become a Paladin.
A/R - can become a Thief
A/W - can become a Samurai/Ninja
E/Me - can become a Shaman etc..........
When you unlock all skills for both professions, including elites, you would be given the option to become one of the combo classes and learn more skills for that class.
Give combo classes new abilities:for example
Samurai/Ninja - able to dual wield
Thief - Backstab and Stealth
Just my 2 cents.
chapter 3: new classes
Kezmarex