Many ideas, must test all, some will work, some not.
People prefer a product ready to work, plug and play, so as less cables and connections, better.
I know problems with RF modules in an electromagnetically noisy environment, so I must test yet, I think will work then will be the best for a plug and play product. Better if people only need connect the topper to 220VAC with no cables between pinball and topper, than if people must to do an installation.
Better if product may update wireless from cell phone, instead of must to remove device and connect to PC computer with a software.
And about wired connections, I need may share same data with several devices, so I prefer work with an addressable communication bus, and then the best, fast and safe is CAN bus, better than RS232 (only work with one device to device).
At any rate, there are many ideas, must test all and see what work and what avoid if fail.
This is not only a DMD, but I try to do a multimedia product, to control DMD multicolor, Topper, and any Mod that want add. Also I will check about add SOUND options to replace original sound board by a sound system working with WAV files.
DMDMK64 is not a simple DMD Multicolor, but I want to become a full multimedia system.