Embedding custom sounds in blueprints / custom decals through hologram projector / more than 1 different flag per construct

It's starting to be a common question if one can add custom sound clips with use via the breadboard or sound block and be the same for decals used via the hologram projector, both sound and decals would be automatically uploaded with the blueprint.

If possible please also consider allowing players to use more than 1 flag image per construct, which should also be uploaded automatically with the blueprint.