Brits is fine, I don’t know why everyone is clamoring for nerfs here and there when they haven’t received any changed in over a decade. If we have to have a nerf, then I guess +5 wood or the build time by +3 seconds as you suggested, but not compounded with another nerf.
Lakota honestly needs a rework at this point, but attack dance and siege dance shouldn’t be nerfed. They don’t really use their Community Plaza until lategame anyway (unless you’re doing some FI Tokala Soldier cheese). I’d rather remove Siege dance and give them real siege options, but until then, I think they’re fine.
Kancha house nerf, sure. Inca’s a bit lame anyway, but we did get some substantial nerfs this patch. I might buff Queen’s Festival while we’re at it, since it’s absolute garbage now.
For Otto, just get rid of siege damage on non-artillery units. It’s such a busted mechanic that we need like 10 different multipliers/penalties to keep it somewhat balanced, and we run into edge cases not covered, like China’s flamethrowers. If you want to keep them unique, give them 1 aoe so they can counter clusters of infantry or something.
Azzy can’t do the explorer bug anymore, so I’m not sure this is needed, Town Dance nerfed by 5% isn’t also meaningful, especially since Azzy can’t buff walls with it anymore on DE.
Dutch is fine, just nerf their starting crates if needs be.
Sweden just needs a rework at this point. It’s a dumpsterfire of a civ, and as long as Torps and Caroleans are crutches for the civ design, we’ll be in this perpetual mess where they’re either OP or crap. My suggestion (though a bit ahistorical) is to turn Caroleans into skirms and make Torps normal houses. You can give them an eco bonus somewhere else (I have 2 villager units, a miner and the regular vill). Either way, Sweden needs to have actual unit compositions beyond musk + artillery or AFK Torp spamming. As it is, there’s no reason to use their best in class melee units or other unique aspects of the civ.
Mexico. I’m not sure why the devs gave charged cooldown abilities to all of the base game’s Outlaws. It’s not necessary and just dumps us with more micromanagement and game knowledge that doesn’t add much. Just get rid of the abilities and maybe adjust their stats a bit so they’re useful without gimmicks.
Gatlings are fine. They’re really underwhelming against buildings and artillery. If you must nerf them, then have Coffee Mill guns reduce the range of Gatlings by -2 or -4 so that there is some counterbalance to infinite ROF cannons.