XDest, taunt combos online are simply impractical unless you're always playing online with the same people and with same latency (meaning once you've adjusted the timing once you can even attempt them, without needing to continuously re-adjust). Besides, any opponent with a brain who realizes that taunt combos might whiff due to lag will not let himself get fooled by casual resets, as Tao really gets punished hard in CS for making mistakes. I still think that no matter how much "muscle memory" you put, you still look for visual clues when doing them and that's where latency fucks it up.
My personal verdict still remains the same. This character is definetely not suited for online play, even more so in CS. You may still play her but it's like playing not at full potential, and in her case it's pretty vital since she doesn't have a whole lot of offensive setups in terms of variety (either go for big damage taunt loop, or poor/medium damage no-taunt).
On an other note: I'm trying to practice her oki ender 214D > j.2D~C > j.5D~A > 214D > 236Bx5 and the damn ~C cancel won't come out in time. It's obviously a timing related issue but I just wanted to know how soon you guys push C to get it to connect. It seems like the ~C cancel really takes its sweet damn time before going into its active frames.