Whenever you hit the range for Angarr, look me up. Friend and I have been parked at 14 trying to get a group for him for some drops but its like pulling teeth to find anyone willing. Usually they don't want to drop whatever BB exp group they have to make the trip.
On the topic of twinking to take them out, kinda double edged sword. Personally I enjoy twinking and have done it and at the same time have leveled untwinked chars (live and other games, not so much here).
The problem is, while killing them untwinked is that much more rewarding and you're much more likely to use the gear that drops, with the difficulty of forming decent groups based on levels/classes available and the fact that most will turn you down rather than skip out on their exp, the slight edge twinking gives can make the difference in taking down an adept with a subpar group.
I don't know if its the fact people can level up so quickly and feel the adept gear becomes obsolete too soon to warrant them making the effort to form/join a group, travel to whatever zone the adept is in, and risk an hour or more trying to fill out the group when you might end up wiping without success, or if they simply don't care.
In a perfect world we could find all the classes we needed within a reasonable amount of time (less than 2-3 hours) form up and kill or wipe a few times and move on, but there just doesnt seem to be interest enough in most adepts to entice people to try them out rather than sit in an exp grind group.
I'd absolutely love to go through and kill all the adepts for the experience, and to do so untwinked. With the current lack of interest in the general population I feel that the only way to go through killing them would be to get a few like minded friends and 2 box 6 or more chars covering all the necessary roles and then just pick up random lfg dps as needed.
Frustrating as I love the idea of the adepts and want to experience/kill them, but can only kill stuff with exp lock on for so long before you look for something else to do or play from lack of interest.
tl;dr - untwinked adept killing = great idea, too few interested in killing adepts, trying to form adept groups at most levels = major headache and multiple hour wait.