I have one I personally love, I've never seen anyone else use it or even comment on it.
Whenever you land an AC, 6C>AC>6C>4D, looks like you messed up a combo, and 95% of the time the person will Air-tech to punish, you can immediately AC and it will catch them and put them back in to whatever mix-up you want. Meter isn't needed unless you want to MTW them in the corner after the reset AC.
Exceptions:
1.Arakune falls too fast for AC to pick up from the tech.
2.Tager will ALWAYS be caught by the 4D.
3.Hakumen gets hit by 4D is magnetism is on.
4.Makoto and Tao can't be hit by the second 6C, so you need to do it after the first.
5.Rachel can use Silpheed to get away from the AC if they realize it's a trap before your AC.
6.Noel is tough to catch on tech because of her size, if she's magnetized, you need to hold the AC, if not then you will probably never catch her. (Haven't been able to test on her much, don't have any Noel friends.
Works perfectly on Ragna, Jin (Move forward for second 6C), Lambda (Easiest to do this on), Mu, and Litchi (Very easy to do it on Litchi assuming you can get the set up.)
This generally works on neutral air if they aren't magnetized, if they are, it works on any tech. I've never seen it used, or mentioned. The set up is a little hard to spot, especially if you set it up with only one 6C. Even if it is spotted, you have to try hard to make sure you don't tech, it's a natural reaction to tech out and get away if it looks like Tager messed up.
The AC combo will do around 2.8k, then the reset will do a minimum of about 2-3k if you follow the AC up.