Me and my friend have a campaign. We play probably once per 4 weeks.

The idea is that we begin the campaign with a random roster of 5 units. We rolled our warlord and battle line. And then rolled the rest of roster with no limits.

The trick is how we roll: i roll 3 random units and our opponent chooses the worst one. And we add it to our roster for the next game. And then i do the same to my buddy.

After the next game i roll again 3 random units and now i can choose the one i like the most.

That is, we do it in turns: One time - worst unit, another time - the one you like.

And yes, before we started, we banned some units that we hate. I banned AC/DC and anus of chaos. My friend banned ad mech airplanes, he hates them.
Currently we're at 9 units in army.

Next sunday our friend will join our campaign, he's playing sisters.

I want to ask you anon, is there a name for such type of campaign with random units, no power and slow army growing?

We call it "Pasta of Grief", but that's a long story.