So, I've been trying to find some decent options post B+G. Seems like he really has no go-to oki options.
However, i did find some interesting things.
First, if your opponent rolls left, right, or forward, NSS B will poke them. However, they can stand in time to block during the roll. So this is a gimmick.
Second, 44K will hit your opponent if they roll left or right for really good damage. Again, they can stand in time to block, which will cause 44k to whiff. So its a gimmick.
But finally, 33B seems to be really nice. If they roll left or forward, 33b will hit them grounded. The thing is though, if they try to block during the side roll, 33B launches.
But yeah, other than those, you can't do much else other than running or GSing in for mixups.