B2 is still good. If you do crossover 1 after ending a combo in 1 2 2, you can then do b2 3 and leave yourself at +3. That puts you in range for cat stance 2, cat stance 3, b3, or f2. There is a window between the crossover 1 and the b2 where they can do a reversal attack, but I believe it has to be 13 frames or less to come out. Some low specials over 13 frames (i.e. Deathstroke low shots, which is 14 frames) will still come out, but your overhead will beat them.
Also I love this buff. Before I was using b2~cat dash MB, b3, f3, 1 2 2 (38%) for the overhead mixup, but f1 being an overhead saves meter.
P.S. Not a good idea to use crossover 1 after 1 2 2 against a knowledgeable Doomsday...he will fuck you up with wake-up Air Snatch or Supernova