One way to kill 10 minutes... I gotta get back into photoshop soon, there's not enough Tengu or Alpha art out there
Here's what I envision as their tag grabs:
Tengu starts it: He does his signature fly-in-the-air-and-fling-them-around-before-he-drops-them-grab as Alpha charges up below him, and when he slams them down, Alpha blasts them in the face and Tengu flies awaayyy.
Alpha-152 starts it: She does her 66T~2T but conjures up her mirror with it so she slams them into it, then she flips off screen and Tengu comes charging in, bashing them into the mirror and breaking it. Then he taunts afterwards.
Oh, and as for the Power Blow idea:
His charge move is he readies his fan like a baseball bat, but cooler-looking. He does his DOA2U yell for the move. If it hits, a giant windstorm is generated as he does his DOA4 9PT laugh. They're lifted higher and higher until they fall back down and the storm stops. As they fall, Bankotsubo steadies himself, and pushes forth a final gust of wind that sends them flying in the direction of your choice.
I always thought Tengu should have a launcher grab/advanced hold where he grabs their leg, swings them around his side and tosses them up in the air. From there you can choose to let them fall and juggle them, or combo-throw into his ledge-grab izuna-type thingy.