The commands.txt is from a 0.28.0. I can't reproduce the error (with that version).

Agreed on the removal/restriction of techs for sparta. In general I'd love to see this applied to other factions as well, when it fits them historically. There could also be some restriction where some techs that would normally be available to some civs earlier, would be available later for other civs that have similar background/culture (bit misleading wording, but I'm thinking more like differences between gaul and britons, with gauls having better cavalry than the brits, and the tech requirements/restrictions reflecting that)

Actually for naked fanatics, I can't find the exact source, but I do remember some discussion a while back I had on an different forum, where it was discussed that while most "naked fanatics" were definitely naked, a few still kept their pants on. I'll try and find the discussion again, but it does sound kinda neat little visual easter egg?

For the extended timeline of the mod (500 BC-300 AD), are there any others that might be appropriate?

In regards to some of the suggestions, specifically regarding unit tweaks/changes, would it be better to have "psīlós" (ancient greek word for lightly armoured troops https://en.wiktionary.org/wiki/ψιλός#Ancient_Greek ). It seems to have been a thing amongst most greek armies https://en.wikipedia.org/wiki/Psiloi and https://en.wikipedia.org/wiki/Ancient_Greek_warfare#Other_elements_of_Greek_armies , though I'm still trying to find more references atm. In terms of implementation, I'd argue that you'd have 3 unit types, slingers (sphendonêtai ?), javelins (ăkontĭstḗs https://en.wiktionary.org/wiki/ἀκοντιστής ), and archers (toxótēs https://en.wiktionary.org/wiki/τοξότης ), all recruitable from CC, and quite cheap, but with very poor stats. From the wikipedia page https://en.wikipedia.org/wiki/Psiloi (though not seeing many good references on the page itself, mostly wikitionary pages for the word etymologies) "The psiloi were the least prestigious military class deployed by the ancient world. A member of the psiloi was normally a man or boy from the lower ranks of his society, unable to afford the shield and armor of the hoplites, let alone the horse ridden by the socially elite cavalryman, the hippeus (ἱππεύς). Another term for a member of the psiloi was gymnetes, (γυμνῆτες), "the lightly armed"."  They also claim distinction between the psīlós and the euzonoi (either eúzōnos (nominative) or euzṓnōi (dative) if we're going by the game's naming style https://en.wiktionary.org/wiki/εὔζωνος ), quoting from the page "Light infantry might also be called euzonoi ("active", "light armored"; a name shared with modern Evzones), though these might be any troops lightly armed, such as hoplitai deployed without their shields, who would not rank as psiloi." My guess here is that there was some form of distinction between the `poor/lower social status skirmisher` (psiloi) and `higher status people who could afford better equipment but were not armed in the manner of hoplites/didn't operate in the phalanx` (euzonoi). The term seems to be distinct from peltast, so not sure what it could be referring to? Speaking of peltasts, shouldn't there be a "native" greek peltasts represented in game, instead of just a thracian peltast mercenary? Hasn't it been attested that greek city states implemented peltast style troops? Though methinks implementation wise, could probably be unlocked as a city phase unit, not sure if as a champion or as basic-advanced-elite troop?