The Instance #179 & #180 talks about new mounts, and by all things holy I think we can go way past riding Hoverboards and Wasps, we can reference the fun ideas in a shared topic on Blog Azeroth, which started it up for me a while back in August 2008.
We might soon see submarines, and all sorts of oceanic mounts. I expect I’ll never see the phoenix or another ultra-low-drop-rate mount, but some of the stuff the Instance crew talk about in #179, and touch on in #180 is interesting.
Just saying its a great thing to add in an expansion, gives breadth of fun to everyone, and has no balance issues to speak of really. And I kind of support a Jetpack for Engineers; more so it can explode or go out of control.
Mastery is a hot topic all over the wow blogs and websites at the moment. After reading a series of threads, and a lot of player conjecture – here is my quick definition:
Mastery: will be a passive increase to your current form/stance/spec’s role. Do not expect it to define the specs, expect it to enhance it. It will be present on level 81+ gear, will change when your role does, and is still very much being worked out.
TL;DR = It’s a passive buff, subject to change; so worry about it 1-2 weeks after Cataclysm expansion is released, when the Theory-crafters have sussed it.
The wow.com one contains back links to all their class and spec related posts, and all sorts of goodies which are also moot at the moment.