How about Vietnamese not needing lumber camps?

Game breaking... Yes, most likely to be. Can't be... Historically accurate outside of Howards.

Probably better wood bonus than huns and Celts I suppose. 100W saving in dark age as they'll only need to build LC on the way up for getting double bit axe. Buff for drush/M@A as mill+barracks would likely be the two dark age buildings. Might allow click up with 1 less vill?

Late game trash war eco composition would require fewer lumberjacks as wood collection rates would not fall off with increasing distance of forest from LC.

Sneak vill with 0 idle penalty. Towering vills could hang around the tower just chillin choppa (Vivi buff 11).

Otherwise, I was thinking that instead of higher hp archers, perhaps faster moving archers could make things interesting. Specially with micro. Right now only plumes are fast foot archers. Perhaps halfway between the speed of regular archers and plumes.