It will be a long, long time until that time.
That said, Siegfried line is for whales. It's the Soul you use when you don't even need PF anymore to reach damage caps. This is entirely impossible to reach without spending tens of thousands of dollars into the game, so... Hector will never "go ham" for you, I am guessing. There might be SOME content where Hector will outright shine - since she is strong against Rage and Stun, so if you get ample amounts of both in a fight you're good to go - but chances are that in most content she'll be rubbish for non-whales.
But hey, that's just my speculation. You might find more accurate info from the DMM thread where people have actually used T4 Souls.