Does anyone use these preset formations?

[Slaists]

A neat trick.

At least, in RTW 2 we don't have to do this. The presets do it in one click.

Some RTW 1 mods had checkerboard presets for Romans too.

p.s. I am surprised they stay in the order you pick them when you drag the line. I've tried something similar and units get reordered when dragging out, with principes on one flank, hastati on the other.