My prediction is Big Changes. What I anticipate, rated by likelihood.
90% chance: Persians get receive FU steppe lancers – Persian identity back in AOC days was being the only civ with a fully-upgraded stable. That’s still kinda true if you regard steppes and Battle Eles as regional units that don’t count, but this identity has still been drained a bit. TriRem is still at FE and loves these sorts of civ identity things. I consider it extremely likely that any Persian overhaul gives them Elite Steppe Lancer with full upgrades. Coupled with their elephant UU, and they’re basically back to having a “full stable,” or something close to it.
90% chance: Persians get Central Asian architecture – This gets requested all the time, and it’s well-known that the architecture set is based on Samarqand, which was a culturally Persian city in this time. Devs have changed Spanish, Byzantine, and Vietnamese architecture in the past so this wouldn’t be a big deal.
90% chance: Mahouts tech remove or reworked – FE devs have steadily been either removing or altering UTs that only affect UUs. Panokseon is out, Berserkergang is out, Royal Heirs was changed. A never-researched UT for a never-made UU is ripe for getting drummed out.
75% chance: Persians get 1 new normal bonus. Persians only have 2 standard bonuses as currently written up, and while the TC/dock HP/workrate bonus has a lot within it, it still leaves the Persians looking and feeling rather boring. Not only do they have few bonuses, but all of their standard bonuses are economic in nature. They’re crying out for a military bonus of some kind.
50% chance: Persians get a UT or bonus affecting Cav Archer – A lot of people really want some kind of CA for Persians. Some want it for historical reasons (Persians used tons of CA) and some for gameplay ones (Persians would be the first no-Bracer civ with serious standard CA play). One idea I’ve soon fairly often is giving them a UT that gives CA +3 attack, so they have the hardest-hitting CA in the game at the expense of bad range.
25% chance: Persians get a new UU – A lot of people have talked about Persians getting Savarans or some other cavalry unit as a new UU. I am skeptical of this. War Elephants are an original AOK UU and are pretty iconic, so even if they suck I really doubt they get removed entirely.
15% chance: Persians lose double TC HP. Persian douche is controversial but has been around forever, isn’t OP, and is not that massively hated. I think people would be sad to see it removed completely.
10% chance: Persians receive elephants in the stable – This would happen if FE really wants to bring back the Persian “full stable” identity. Conceivably could be paired with them getting a new UU, and the War Elephant either leaves entirely or becomes an upgrade to the Battle elephant.