Curious: Has anyone implemented a CM4 solution?

I’m on the brink of biting the bullet and designing my own base board for a RPi Compute Module (CM4) to take advantage of the 6 chains. The intent would be to replicate the same functionality as the Electrodragon Active Drive Board but of course in the CM4 form factor and for 6 chains instead of 3.

I was wondering if anyone had created a custom design like this already, and, if not, how you went about validating the functionality of 6 chains at once?