From a tempest heal auramancer perspective
I really like that you could permanently keep Frost Aura or Shocking Aura. Aegis on Aftershock! is fine too.
I would put multiple stack of stability for Eye of the Storm! considering the long cooldown and lack of stability in the tempest kit (technically there's Rock Solid, but, uh... it's not very good).
Also not tied to the patch itself, but could you move the traits around so that the heal tempest can pick both the alacrity trait (Lucid Singularity) and the heal on aura trait (Elemental Bastion) ? Lucid Singularity ask us to constantly switch elements, but without Elemental Bastion, we can't work as healer when outside of water. Okay, we have a few source of healing (the big water boy, the frost bow, and the heal shout), but they are not as fun as throwing 20 bazillions auras around.
Personally, I would roll up Elemental Bastion into one of the aura trait (Invigorating Torrents, Unstable Conduit or Powerful Aura, depending on whenever it should be allowed for other elite specs), and add a new grandmaster trait for people that want an easier gameplay. Maybe something that would encourage you to not swap elements (to mirror the other two traits). It could be something as simple as "-50% to the cooldown after an overload" or something as elaborate as "while in combat, you can't switch elements but your overload is passive and permanent. (You can't manually cast overloads and you are constantly pulsing the same effect as if you were channeling the overload of your element (without the need to cast it). It never include the final pulse or field that drop at the end, but it does include the combo field during channeling. For other traits/sigils, you count as starting / finishing an overload immediately when entering combat and then every 10s)".
Also while I'm on the Santa wish list, could our elementals be permanent pets ? I'm tired of constantly recasting my big water boy. And change the summon weapons to work like the engie kits or firebrand tomes. Rebalance them if you want, I just want the Quality Of Life of not having to click an additional button.
Stability is a support boon, so putting stability on the DPS trait is a terrible idea.
It's a way of balancing the game. Whenever it's a good way of balancing the game depends on whenever they will increase only the floor or also the ceiling on DPS class.