Personally I see Toph's inclusion into the story as a fitting tribute to the late Philece Sampler who voiced her as an old woman. Especially since Philece died earlier this year at the beginning of July.

Great voice actor, Rest In Peace.

“Last I checked, I almost died from lightning caused by Azula, so no.” He told him as he earthbends rocks around his fist and swung it towards him, but Kotal caught his fist as the two struggled with one another. Aang tried to break free, but a smirk formed across his face causing Kotal to raise a brow, only to see Aang break free and flip back and kick Kotal against his jaw, knocking him down to the ground. Aang flipped himself back up and looked to the General, seeing him stand back up as he rubbed his chin. “You’re definitely a strong warrior Kotal, maybe fen strong enough to be a great leader one day.” He told him.

Fen?

11153883
Sorry, typo.

Till out of no where, Reptile appeared through thin air and kicked him away, forcing him to stumble as Torr looked to the Zaterran warrior, who snarled at him as he stood between him no the defenders. “Stand down Ferra, you and Torr will not be killing anyone today.” He told them.

And

11201374
Got it.

I would imagine twilight doing the same smirk since with Trixie in no second prances episode, but with chrysalis. Guess the rivals still continues after all this.derpicdn.net/img/view/2016/4/30/1143090__safe_screencap_trixie_twilight+sparkle_alicorn_pony_unicorn_no+second+prances_animated_cape_clothes_discovery+family+logo_duo_fake+smile_female_folded+.gif

11264405
Yep.

Im really impressed, good job. 👍👍👍👍👍👍