Might I try to add one? I've worked with Meta Knight for a long time now and after discovering that you can actually do a sortof "free hit" after short hopping with a U-air or D-air and then doing another aerial move, I created this combo I have been working on.
Ryu - Combo
(I prefer dashing, not sure if it actually effects the momentum substantialy)
dash >short hop > D-air>immediately F-air>hit ground, Short hop, D-air repeat
you see what it turns out to look like (and note this has mostly been used by myself on final setination or other maps with flat areas) is you charge the oppoent and should they shield or get hit by it you can with timing ,fast hands, and skill, repeatedly do this combo for 3-5 times consistently.
First you do a short hop, then hit them with the D-air, then because of how you are situated in the air with Meta Knight your f-air comes out half way between the apex of the short hop and the ground, only doing the first blow of three of the f-air. it's like a little poke after your D-air, and then when you land no lag at all. The oppoent s still in hit stun at this time so you are free to do it again should you be quick enough. It's still in testing so there may actually be better ways to start it off (such as a f-tilt or D-tilt into trip and then use it) but as it stands now it does work.
Also the more hits you do happen to get off the faster it becomes, less lag on your part because of less damage and diminsihing returns and all that. I've also pulled off a less version withjust D-air and short hops but I thought using the f-air's potnetial made it better as they had less of a chance to escape.
Just thought I'd give my two cents to this thread ^^y