I edited my original post but I don't know if itch.io sends notifications or something for those, but after posting I also wanted to comment on two of the units:
I will say that the Hoarder and Shopkeep probably feel like the weakest units and I'd like to maybe see some buff? While they synergize well, the hoarder trades being able to get 3 free 1 tier gear for the fact that you can spend gold to get 2 gear for any tier, technically. Shopkeep makes it slightly more bearable, but by themselves, if you instead get the banker, they technically can make the difference of buying 2 food at shopkeep price while being more versatile. While I think tier 3s for shopkeep are better, tier 3s for Hoarder feel barely like an upgrade, especially Overprepped. I think the last thing against them is scalability. While having 2 tier 2s of other units, they can act independently, making you recieve the rewards of both units (ex. while going for tier 3 scholar, having 2 tier 2 scholars gives you twice the health buffs as one), while here the units don't give any additional benefit except stats when combined.
I think that this is a fun route with the units to take but too hard to execute (Maybe am just bad or trying too hard to get tier 3s) and not simply go for a hiker/banker, while I also understand that a solution like 2 Shopkeeps reducing price by 2 might get too good.
(2nd Edit) Ok well maybe scratch that as I just managed to get in a win with this with only 2 losses (albeit carried by Poisoner), still I'd like to know your thoughts on the units!