It's good to return to a more reasonable position. I would remind you that in 2021, there were proposals to replace Boudicca in order to respect this cutoff.
Especially if the team members decide to make Empires Besieged an official mod that simply adds content (notably new playable civilizations), it has to be flexible. Historical cultures that fall on both sides of this arbitrary boundary will pose a problem otherwise.
320 per 1 food? if you add the house tech into it,it probably become somewhere around 180 (guesstimate, not calculating)
that's not bad for a obscure piece of the biggest civ in game right?
the persians need a lot of balance changes (both buffs and nerfs) perhaps I'll make a thread on its own