The CAD looks cool. If the sky is the limit the parts I'm hoping shops will make are firing pins, bolts, gas blocks, trigger group housings.
More handguard options are great too. Not sure what the rest of the community wants. I have a few short handguard. I wish there were more long options that gave a way to mount a dbal/laser as low as possible. Much like kinetics scar handguards. They have a front section of rail lower than the main top rail.
No matter what you do, it's a big plus for the community to have any kind of additional options. Kudos.