Ahhhh, Ahsoka... How you endeavor to break my heart a second time. I say Lady Tano lives. She fends Vader off and slips away during the explosion. Vader barely survives and limps away without the prize of Malachor, the Presence Holocron. Alone and trapped in the remains of the temple and going ever deeper into its depth, Ahsoka must now find another way out, perhaps even make a gambit with the dark side itself. Regardless, I believe we will see her once more in Rebels... but she'll never be the same after Malachor. Noone will.
Sabercopters are dumb, and this is capitalized upon by the death of the Eighth Brother. Speakin on which, Maul was BRUTAL. I can't believe he bisected Seventh Sister, then straight up murders a defenseless Fifth Brother! Then, Kanaan is blinded by Maul, in a moment that IMO mirrors Starkiller's blinding of Kota -- by a Sam Witwer character at that to boot!
All in all, the best episode to date... probably a better story than some of the best of the films so far -- for me, the feels were very real, especially when the "long awaited meeting" was finally underway. Good, good stuff.