I play mainly Vanar and Abyssian, and I’m used to populate the table with minions. Be either wraithlings or walls.
One thing that amazes me is that walls are vanishable. Nor are them motionless, but also when you cast a dispel on a wall you destroy them.
Time ago this was just a sidenote, but from the moment that some deck archetypes tend to use a great number of walls this seems a concern.
Wraithlings, on the other hand are considered tokens. A kind of minion with some handicaps.
I guess walls should be considered tokens too, but not killed when dispelled.