My predictions for A523:
1- bigger front wing.
A522 FW is one of the smallest, if not the smallest (short shord line, quite low camber, small surface), the drivers had too much understeer in many tracks, that's why Alpine tended to put a smaller rear wing in some tracks after Fp1 and onwards.
2- higher front suspension wishbones.
A522 has one of the lowest front bottom wishbones on the grid. So they could be raised in 2023 like many cars in 2022 and be used to downwash the FW air towards floor mouth a bit more.
Original pics from Nextgen-Auto
3- pushed back cockpit
Alpine could take inspiration from RB here (the most extreme car in this regard) and push the cockpit rearwards in order to narrow down the boat area and have more space for the tunnels laterally. They could push the lower impact structures backwards too to have more tunnel space vertically. And they could use the boat and the floor more as a big storage space like RB, to empty down the sidepod undercuts and have larger ones.
Original pics from Nextgen-Auto
In this case, Alpine could lengthen the wheelbase. Theirs is shorter than RB or Merc, so after having lengthened the monocoque, they could alter the wheelbase to keep the weight distribution the same.
But I wont be surprised if Alpine retains the same tub and Gbox as 522. We're talking about Enstone here.
4- bigger RB-like sidepod undercuts?
A522 had a different undercut compared to the other early 3 ramp-shaped-sidepods cars. The A522 front undercut is more classic and is turning air more aggressively (less aggressive than Ferrari, MCL, Williams) towards the floor edge wing to generate some additional floor front DF (hence the smaller FW?)
A522B sidepods front undercuts became a hybrid later.
5- Will Alpine dig its sidepod top channels / water slides further?
Alpine could remove that crest above the exhausts by replacing the pipes with more horizontal manifolds, and have a straighter path for the air towards the rear of the car, similar to MP426.. but I doubt it. That crest/hump is probably beneficial and attracts more air in the hill by creating a lower pressure zone (lift)...
Mclaren
A522A vs B
To be continued