The more I think about it the more sense it makes to do this now before I get any further with my build, as well as make a PBC for a header board to easily connect all of the different seven segment pcbs to the displays board. Maybe even make it a "motherboard" that the displays card plugs into, eliminating any cables in between the 2 boards.

Before we get too far down that road, any other features anyone wants to mention?

Buddy