Right now when you add a required dependency to a Minecraft bedrock edition
map it's useless. It's really just there to 'let people know' that this
other thing is associated with what you are downloading. I think it would
be awesome to make it so required dependencies automatically download when
you download the map that requires it. This is an important thing to
consider because most people don't want to go out of their way to download
another thing even if it's required for a map or addon to work. I think
this is how required dependencies already work for Minecraft Java mods so
it doesn't seem to far fetched for Minecraft Bedrock. Thanks for your
consideration!