So we know there won't be a new class in Warlords of Draenor - nor are there plans for a fourth talent tree in the foreseeable future.
But we still want new ways of customising our characters to our desired play-styles, right? So why not instead focus on other forms of customisation that impacts play-style, but not combat.
I propose a new set of talent trees implemented which deal with secondary bonuses to professions, treasure hunting, and more. These should be relatively easy to balance and would be great additions to the game. Like current talent trees, there ought to be a new tier every 15th levels or so.
Let's you specialise in different tasks to do with crafting, gathering, and so on. Are you the guild alchemist or a master miner going at it alone for great riches?
Treasure Hunter Talents
Let's you specialise in different ways of obtaining more loot. Do you prefer gaining your loot alone or in groups; via farming, dungeons and Currency Points, or raids?
Let's you specialise in different ways of transportation, such as sacrificing a little bit of flying for better riding. Would you choose a second Hearthstone over a 100% run speed increase while dead?
I've just given you the general idea here. I have a bunch of ideas for specific talents, but figured I'd see what people feel before I invest more time on it.