While playing the recent PUPs with native american civs (who can convert treasure guardians, as you guys probably know), I noticed Asian treasure guardians speak the same language no matter what map you’re in (so, for example, you can have Smugglers speaking Japanese in the Central Asia map), while European treasure guardians get no voice lines at all.
I was thinking that making these units use different voice lines based on what map you’re in would add a nice dose of realism. And I thought that adding this feature to religious site units would be good as well.