If you are not familiarized with this guide, here is the link:
https://aoe2-de-tools.herokuapp.com/villagers-required/
My suggestion is adding this information in the toolkit. When you see a unit’s info, at bottom could appear the resources icon with the quantity of vils required tu sustain its training.
This quantity should updates with the different eco techs and bonuses.
I think this could be a good addition and help to tune the macro for low Elo players.
Thoughts?