I'm not too experienced of an Aigis player but I'll try my best to help critique. I probably learned more from the videos then you will probably from me.
currentlemon, I have a bit of a hard time making out what is happening in your first video...it was really bright and I had a hell of a time looking at your meter usage. From what I seen I like your Aigis so far. It'll be much easier to critique and find holes though if you posted some matches where you loss but that's beside the point. I'll tell you my mind whether it is right or wrong.
First Video
0:20 - It looked as if you could've followed that j.A with something...dunno if it will connect but it is always worth following up with j.B, j.2B afterwards if it connects. Winning with an air attack could lead to a smooth mode change or a good oki situation afterwards. 0:24 - Dunno if you meant it or not but that was either a very good read or too early of a burst. You got off with 100 meter with that max burst though and it worked well for you. 2:17 - I don't agree with the B+D after the Megido. You just lost a good oki situation after it and he was pretty much one mix-up from dying. From what I saw, you also had half full Orgia meter after which is way more than enough. All you need to worry about the super but you just gave him a chance to reassess the situation from a full screen away by ending that way. Second Video 0:39 and 0:46 - I think you could've followed up that IAD j.C. I was trying this out in training, I dunno how height strict it is but after an air j.C, you could follow it up with [land, sj.A, j.B. j.2B, 5AA, 22B, j.C(1), j.236D]. This would lead you with Orgia mode and a mix up situation. Try it out and experiment with following that up. 1:13 - This might be a better time for B+D as he was close to death but that almost killed ya there when you missed it. Might be safer to let him drop and make him guess afterward if you're not sure of your timing. I think you timed it a bit late. I think you do it when you hear that explosion from the Megido. 2:06 - You had enough meter to try some tricky stuff like a cross-up j.C, j.236D. Dunno about canceling your Orgia mode.
Again, don't take this as a hundred percent correct. I might be wrong and I'm still learning to play a solid Aigis. Feel free to correct me on some things but those are my thoughts with what I know now. Just trying to keep this thread going.