[Loco]

I think having a crew would be difficult to pull off. I agree with your ideas of having to deploy. Any indirect artillery should have that restriction.

I like the flail and would love to see an Artillery aspect. A tank that has to deploy before shooting would work.

Of coarse you could also go with man portable mortars as well.

I also think that anyone using indirect fire should be assisted with a secondary scout with a laser target indicator.