Sorry for the double post, but I have an idea that can make Rachel's mix-up kinda fair and interesting
Have 6C jump cancellable to jB and jC
Of course the 6C needs property changes so a opponent cannot push Rachel out of jB range with FB but it creates couple of scenarios.
I use 6C, opponent can
1)block high, anticipate jB overhead
2)block high, anticipate jC overhead
3)block low, anticipate jC overhead
for scenario 1, since it is one of the safest option for Rachel, if the opponent blocks jb correctly, then both players are about neutral.
for scenario 2, since its a riskier option for Rachel, it gives her more +frames on block and gives her an opportunity to continue her mix-up game (4B/2B/3C/maybe a wind 6C). Maybe jC can even take off a guard primer if you think the reward factor isn't high enough.
for scenario 3, the opponent is taking a risk because he is guessing that the Rachel player is going to jC, and he is going to make the jC whiff via crouch position and is going to punish it with a combo
scenario 4 comes if the opponent makes a mistake and the Rachel player uses jB instead of jC while the opponent is crouching. The opponent will eat a bnb 5B->CDC because of the increase stun from the crouch state.
Really just brainstorming at 2AM so when I wake up and reflect on this it might sound retarded but heh.