I think team units (condottiero, genitour, imperial skirmisher) are not especially good design.
I used to support the idea of team units as a fun idea but the more I play the game, the more annoyed I am with them.
I just think they either mess with civ balance or they’re totally useless.
Condottiero:
I find it pretty annoying when I happen to be a civ that is a bit more dependant on gunpowder and the entire enemy team has condos because one person on their team is Italians.
Or with civs that are meant to have lacklustre swordsmen but then gain decent swordsmen through condos.
Just make it an Italian UU and maybe buff it a bit or reduce its cost.
Maybe give it a Castle Age version and a purchasable elite upgrade in Imperial Age, as a way to give Italians potentially another option in Castle Age.
You can have Silk Road as their team bonus, since it’s a bit of an underwhelming Imperial Age unique tech.
However it’s done, making the condottiero exclusive to Italians would buff them since you can balance the unit better.
Genitour:
Have Kasbah be their team bonus and make the genitour as an Iberian regional unit (Berbers, Portuguese and Spainish).
Since it won’t be a team unit anymore, it’d be easier to balance since you don’t have to factor in all the potential different types of genitours there could be.
You could give them certain civs specific buffs, sort of how steppe lancers all have different civ bonuses.
Giving genitours to Spanish and Portuguese would be a little bit of a buff to them as well, both civs that wouldn’t hurt to give a bit of a buff.
Imperial Skirmisher:
Maybe this is a terrible idea, but I think this should just be a standard upgrade avalible to certain civs.
I feel like how the spear line and swordsmen line are design in terms or upgrades works well.
Some civs have bad swordsmen but good spears (Lithuanians, Persians, Byzantines, Ethiopians) and some have good swordsmen but bad spears (Berbers, Mongols, Malians, Aztecs arguably).
Aside from a few exceptions (Spanish), if you have bad archers, you’re very likely to have bad skirmishers.
I feel like this doesn’t work as nicely as it does with spears and swordsmen because there isn’t a halberdier upgrade equivalent available for non-team Vietnamese aligned civs.
If the imperial skirmisher was available as an upgrade for a select few civs, I think you could help balance out some tech trees, like giving it to Celts and Burmese.
This way, Celts and Burmese can still have their lower quality crossbows but not at the cost of poor skirmishers.
Imp skirms avalible to more civs could be seen as a little bit of a nerf to archers but archers are probably the strongest units right now so I don’t really see that as an issue.
Last comment, the Vietnamese team bonus should be that everyone on your team can see the enemy locations.
It’s a bit ridiculous that you have to flare the locations for your teammates every game and spend time in the chat saying which civ is located where.
If all my suggestions are bad, then that’s fine. I’m not infallible.
All I really want is team units to be gone, in whatever way possible.