Not bad. My thoughts:
From my personal exp., I believe ending a standing combo with standing 4 to lead into vortex is better than d3. It's good to use both, standing 4 has more + frames on hit, but also has that pushback. Certain characters can get in your face/ punish bat after full screen rune. One thing I do after a bat combo and doing mb rune, I summon bat rather than doing the last rune. Leaves you at a better frame advantage and can start the bat zoning faster. I learned some stuff from your Tanya set with whoever that was, I never knew fL2 bat was your best friend in that mu.
Corner bat combos, after a confirmed b2/B32 skull with bat out, bl2, 4, njl, 4, 14 trance, f212 skull does 49-50%. You can do the same combo with regular bat after skull on hit, but the timing is much more strict. And njp low bat on HKD is super good in the corner.
I'd like to get a set with you sometime. Do some quan mirrors