As of right now the Muiscas Guecha warrior is in a pretty bad spot.
For 50wood and 60 gold it’s very expensive and therefore beats almost nothing cost effectively.
I would propose that Guecha warriors benefit from monastery techs. Obviously not all of them can have the same effect but I’d be thinking about something like:
Sanctity: +15HP
Redemption: +2 Attack vs. buildings and Siege
Atonement: + 2 Attack vs. Monks
Fervor: + 15% movement speed
Illumination: + 50% attack speed (would be on a level with a non thumb ring archer afterwards)
Herbal medicine: doubles their lifegain upon death
Theocracy: The healing effect stacks
Block printing: +3 Range (maybe this is excessive, but on the other hand the unit costs quite a bit. maybe loose the +1 range for Elite upgrade in return)
Devotion, Faith and Heresy keep their effect
This would not only fit within the “spiritual warrior” theme, but also in my opinion more interesting than straight up buffing the unit. I decided on the monk tech effect in a way that they kinda align with a similar effect for the Guecha, however on the other hand I could see them give different effects, just make you pick up some of the lesser used Monk techs, as this way, the best monk techs are also the best Guecha techs, apart from Redemption. Anyway I like this having a subpar unit, but with lots of investments it can be turned into a real powerhouse progression.
At least until the latest patch Muisca didn’t have a good winrate, however since then they (+Slinger & Champi) got some buffs, so depends on where they settle now, they would need to be nerfed in other areas. However I feel like no matter what the Guecha needs more buffs regardless, because I feel like thats not good civ design, to balance a civ around their UU being useless.