Interesting. What's your optimal D1 xx MB Sword Spin BnB in the corner?
For bnb, id use this...
d1~db3~MB, 323, f23~df3...... 33% 1 bar
for 1% extra damage, you can do this...
d1~db3~MB, 1, 1, 323, f23~df3...... 34% 1 bar
If you want to burn 2 bars you can do the following..
d1~db3~MB, b23, db3~MB, 323, f23~df3..... 41% 2 bars (you can swap b23 for 32 into meter burn sword spin for the same damage)