At our company we usually want to get the "as saved" state of an assembly or drawing, meaning getting a fixed revision. At least in our environment the option "Related Documents" will cause the get command to take minutes instead of seconds to download to workspace. So this option is by default is disabled.

In the Inventor dialog there is not such an option

In fact the option is always "true", meaning a medium size assembly will take up to 10 minutes to open. If you trace the network traffic, you can see that Inventor is idleing 10 minutes on "GetRevisionAssociatedFilePathsByIds"

I don't know if we are the only company suffering from this, but it will mean a major improvement having an option to disable "related document".
Furthermore I don't see any purpose in having all related drawings of all components downloaded to workspace when opening an assembly.
Best regards
Erik