TBM - Tournaments balance mod

It could grant all skeletons protection against arrows. This would increase their role in the endgame, as they would be harder to defeat. And if you also increase their attack by 2-3, they would be quite effective at breaking through defenses.

I agree: instead of reducing the survivability of archer skeletons, it should be increased. This way, they won't be very effective at breaking through defenses, but they will be useful in the endgame. Instead of giving them HP, give them 25-50% protection against arrows or 15-25% protection against magic.

I would recommend either giving archers the ability "Magic Resistance 25%" like the Warriors, or, more thematically, giving them an ability for "Arrow Resistance 25-50%" and giving it to both archers and Warriors.
The Warriors don't need to be touched, at most, a minor nerf of something by 5-10%.

P.S. The imbalance of the 2-2 archers' damage was confirmed by the player who played as the Necromancer.