Street fighter 4 option selects????
whenever you land a bnb that ends with some sort of DP+214D, press j.b as you're falling and buffer 623C. It catches front roll and if the j.b doesn't hit, you just land in front of them without doing a DP. If it does hit, the CID comes out and then you can rapid cancel (you probably have 50% from the combo you just did if you're doing some sort of DID bnb ender) and do a long combo to the other side that gives you another 50%.
I think falling j.c catches backroll, but i'm not too sure how it works. This really trains them to neutral tech or try to do a late/early roll tech
Long combo: falling j.b, 623C (RC), (note you are now facing the other side) 214B, delay 214D, dash 5b 6a hjc/jc (depends how high they are) j.C jc j.C 214C dash 6D J.D jc j.C 214C 5D 623D followups.
really the air combo depends on what kind of oki/meter you want. Up to you
I didn't really spend that much time dabbling around with that combo, there might be something better