I don’t know why R28 is even out yet, it’s super buggy. No where near done being play tested.

Carthage has the stone mining bonus of 25% listed 3 times, but also has a bonus saying that stone mining upgrades are free despite not having any stone mining upgrades apparently

Well, if you click on the hero icon at the top left of the screen, it does the same thing.

This is tracked here.

Sure. It pretty straightforward for those. Teutobod = *þeudō (people, tribe) + *budô (voice, message, command) = Þeudōbudô Lugius = *Lugi- (of the Lugii) + *-jaz (equivalent to Latin name ending in -ius) = Lugijaz Boiorix = *Bajā-/*Boio- (of the Boii) + *-rīks (king) = Bajārīks