MattII wrote:+1 or +2 for every two rows added. As for tactical variety, on a flat field, probably not a lot, but it allows you to add in some much bigger obstacles without compromising free-access too much.
Bigger obstacles = longer movement paths, so without other adjustments movement increase should be equal or greater than battlefield increase to maintain the same balance.
Or indeed combining a smaller movement increase with other balance fixes. Scale ranged damage to target distance up to 1/8 or 1/16 and reintroduce the ammo limit. Reduce movement increase of strike-and-return units and no retaliation units.
That would work for me.