I would have been much happier with Tiana if she were U/W because there is already more Azorius enchantment/aura support (and blue auras are better than red). That said, I've been playing with ideas similar to those in your post cyberium_neo, you may also want to consider Brand of Ill Omen and Captured by the Consulate .
I've also been playing with the idea of Jeskai Recurring Auras (probably helmed by Shu Yun, the Silent Tempest, although I've considered trying partner commanders too) with Bruna, Light of Alabaster , Hanna, Ship's Navigator , Tiana, Ship's Caretaker , Rootwater Shaman , and all the other various aura enhancers/card draw/recursion in the 99. The question is are there finally enough cards out there that interact with auras to mitigate their card disadvantage problem? Tiana certainly goes a long way in that department.
I've also been playing with the idea of Jeskai Recurring Auras (probably helmed by Shu Yun, the Silent Tempest, although I've considered trying partner commanders too) with Bruna, Light of Alabaster , Hanna, Ship's Navigator , Tiana, Ship's Caretaker , Rootwater Shaman , and all the other various aura enhancers/card draw/recursion in the 99. The question is are there finally enough cards out there that interact with auras to mitigate their card disadvantage problem? Tiana certainly goes a long way in that department.