Thoughts how? The specifics are simple enough. If memory serves, it's around 300 honour and 11.99g to cap a spirit tower in the Bone Wastes or kill 10 enemy players at Halaa.
The Bone Wastes quest doesn't excite me, as it's almost certainly something that will be zerged. Apart from that, I don't usually play more than 2-3 hours at a time, so with the 6 hour reset I don't imagine I'll do it that often.
Halaa interests me, but more from the design of the quest than anything else. I expect there'll no doubt be some amount of kill-trading, but it still should be possible to solo if you're patient. What I'm excited about though is that this is, to the best of my knowledge, the first PvP quest that actually involves killing other players. Sure, it's something you'll have to do most of the time to complete the goals of other PvP quests, but those goals are never the players themselves. It's always capping towers or running around with Silithus dust. The implementation of world PvP in Halaa is by far my favourite in TBC (ZM / HFP / TF are all just the same cap-towers-get-buff thing), and I'm really looking forward to seeing what Blizzard is able to do in WotLK in terms of PvP zones and kill-quests.