This is yet another patch to differentiate athen civilization.
I find it interesting to have at least something special for a unit of each civilization.
The purpose of the patch is to make the Athenian hoplite a fourth level, becoming a champion.
Idea started by @wowgetoffyourcellphone at https://wildfiregames.com/forum/topic/36934-civ-differentiation-athens/page/2/?tab=comments#comment-421616
With D3688 it can be a great. The idea is the same, making hoplites more used.
See also D3675, D3688, D3727.