Minions being unable to walk through each other is an unablanceable Nerf

If you have a game, with a skill, and that skill has a 1second cool down, and travels to a target, taking 1 second to get to the target, you have a figure you can balance around (100dps).

You deal the damage you are supposed to, because you use an ability, it hits an enemy every time and you deal damage. Great.

Minions, when pathing though uneven and limited terrain, and the limited space that a monster has around them, do not have this and cannot be compared to each other in a 1 to 1 sense.

A minion needs to traverse the area, reach a target, then begin attacking.
Two minions need to do the same, reach the target, then move around each other to get a limited spot around a target to be able to attack.

More minions (which the whole theme of a player character who plays minions most likely will try to use more minions) scales this issue.

More minions = more time to get to a target, to pathfind around each other, to get stuck on doors, halls, bridges, paths, rocks.

Each minion that cannot reach it's target is a zero for damage, each minion that needs to take time to wait it's turn to go down a path blocked by other minions etc is at best loss/zero for damage.

This turns into, a you deal 0% of the damage of a skill you use, or a very partial amount of that skill. Example: 10 skeleton warriors, but only 2 can reach the target, you now deal at best 20% damage. Example 2, you have 10 skeleton warriors, the all can reach their target, but get in each other's way, and take 10 seconds to all reach their target. You are dealing multitudes less damage for each scenario.

We either need a way to let minions just phase into each other, or to do way better with limited (1-2) minions, although that's just a really lame version of a arpg necromancer trope.

Last but not least, I say that this is unbalanceable, because of the randomization in the world, you can't be perfect every time with pathfinding with the way that the maps are laid out and you can't expect to. And that's okay, but I feel like there should be something in place to avoid all these placement and pathfinding problems.