Eladrien

The biggest problem with mid-combo use of D.Garu is that the "correct" motions to continue the combo afterwards is pretty character specific. I haven't tried getting it down with everyone, but I know that for Narukami and Mitsuru, you need to do D.Garu[9] briefly then [2] or [3] in order to pop them up high enough so you recover with enough time to land 5A before they can tech.

For the SB.Garu, I don't hold [3] for the entirety of the move. I do mostly [2] while tapping [3] only to position the enemy a little bit in front of Elizabeth (her model in the middle of Garu, not the wind effect). After you get that down, you can start trying to add a D.Garu after SB.Garu before going into the rest of the combo like Juunee suggested. However, keep in mind that the timing and spacing varies slightly for each character, as well as the best inputs for controlling the direction of both Garus. You will also for the most part have to follow up with 2A/5A > 5B instead of going straight into 5B, due to timing constraints. As for j.D/5D, it does not gain any benefit from the 2C damage buff. Only 5C, j.C, and Memento Mori as far as I've seen.

I would also add a lack of good aerials. Her j.B is really good for controlling the space directly in front of her, but she cannot really do much about someone approaching her from above or below while in the air. There's pretty much no reason for her to ever jump in on someone, which really restricts her options of approach.

It's closer to 10 seconds, the other video edited out a large portion of the delay since it was only demonstrating what the moves looked like.

There's definitely some character specific stuff with Elizabeth. One of the bigger ones I've noticed involves one of her Challenge Mode combos that starts with 5D > 2AB. The sweep will pick up everyone out of Thanatos' throw except for Yosuke, Aigis, and Teddie. I also have problems with the D.Garu combos on Yu, but on Yosuke, it's fairly easy to do something like D.Garu[3] > 5A > 5B > 2AB > D.Garu[3] > 5A > 5B > 2AB > D.Garu[3] > 5A > 5B > 5C(2) > A.Bufu > A.Bufu > j.C for meterless ~4800 damage.

Nice work. There's something important to point out concerning Elizabeth's damage that most people don't seem to notice. Using 2C (Thanatos' burst looking move) gives Thanatos' next "physical attack" a +50% damage buff. The moves that I've noticed benefiting from this buff are 5C, j.C, and Momento Mori. That means 6300 damage on Momento Mori on a feared target after "charging up" Thanatos with 2C. I haven't figured out if this hidden buff has a duration on it or not though. Also, this hidden buff on Thanatos only seems to be expended on a hit, and getting the buff on Thanatos does not require 2C to hit your opponent. It's probably not a major find or anything considering most of Elizabeth's combos incorporate 2C, but I found it to be an interesting mechanic.