It would be too easy to abuse the bonus.
1.
Send 1-2 vills forward early.
2.
Loom.
3.
Lame the f…
out of enemy’s resources (gold, stone, berries) with houses/palisades, if possible, wall enemy in.
4.
You’ll be very late to feudal but you can insta wall yourself in case they go aggressive
5.
If they stay in feudal, they won’t be able to break your wall.
If they go Castle Age, it’s not very useful for them, since they would have very little gold access.
Even if the strategy could be beaten I think it would be really annoying to play against.
It would be like Goth’s Instant Loom meta, when they went forward with a vill at the start of the game and lamed the f…
out of Boars/Berries/Golds/Stones.