If you're playing the angle of of jinxed/magicked troll, there're some things you should keep in mind before you fly off the handle bein all cute and adorbs. The kezan troll slaves are likely not the same tribe as the darkspear tribe, which make up the entirety of the horde's troll population. Given the location of Kezan in the south seas, the proximity to Zandalar (the cradle of troll civilization), as well as their broader physique and character model, they're likely remnants of the Gurubashi tribe. http://bit.ly/h6fW9l

While the Gurubashi are not the sharpest sticks in the jungle, they ARE brutish, nasty, a little pissed off, and cunning as all get out. Trolls are already pretty smart to begin with, and if you've been mining kajamite, you're probably a fair bit smarter than the average jungle troll.
http://bit.ly/i226Ac

I feel the nature of Horde Goblins will have to evolve beyond a single desire for wealth and power. it makes their loyalties a little too fickle. Something besides that will have to bind them to the Horde in the long run. I'm looking forward to seeing how Goblin lore will evolve now. Probably be fun to play a goblin that learns to place their trust in the Horde and to fight for them out of loyalty to the cause.
http://bit.ly/gY8Oij