Ah, RIP TGS. I think if we're getting news now, it's only coming from the Direct. Current prediction on possible AA-content would be an AA4-6 trilogy game, followed by a reminder that the original trilogy is already out on Switch, and then go quiet on that front until the end of the direct until bam, Smash reveal.
Let's see, AA-series items? For an Assist Trophy, if she's not a part of his moveset, I could see Maya, or Pearl if Maya does get used in Wright's moveset. Their appearance and spawning would be situational, only have a chance of spawning once a certain condition is met. In a battle with three or more players, for any player that has already been defeated/ran out of stocks or stamina, Maya/Pearl would "channel" the fallen fighter, and whoever they choose gets revived for a time to continue fighting, maybe ~30 seconds? They'd also have a unique color palette based on the spirit medium, no matter what costume the player originally used. After the time's up, the spirit would be ejected from the medium's body, who would strike a cheering pose before vanishing, returning the player that briefly controlled her to being out of the match. Additionally, getting KO'd/losing your stock will make the channeling abruptly end, effectively KO'ing Maya/Pearl in the process.
For a normal item, hm... sorta taking this from an idea I had for Apollo in Smash as a Special, translating it to an item. His iconic Bracelet would be an equippable item, and last significantly longer than something like the Frankling Badge, Bunny Hood, or other wearable items. It has no immediate effect or benefit, but silently tracks the actions of the player closest to them. Using an attack or evasive movement (such as rolling, spot-dodging, or air-dodging) will make a sweat drop appear on the character's head. This will go away after 3 seconds, if another player becomes the one closest the wearer, or if they use the same attack or evasive maneuver they just used again (Ex: Fair, and then fairing again before 3 seconds pass or while still be the one closest to the wearer). In the latter case, a "Gotcha!" speech bubble will appear, and the opponent is slowed down like the Timer item does, leaving them ripe for punishing. The Bracelet will then fall off at this point, or will otherwise fall off after 45 in game seconds. The idea behind this item is to notice and punish "nervous ticks", or in this case, punish for using a move twice in a row within a short time.
