As a Roblox developer, it is currently too hard to allow people to join their friends in sub places.
If Roblox is able to address this issue, it would improve my development experience because players would be able to join without as many issues getting in the way.
Current issues with joining friends in sub places:
If their are multiple sub places the player would have to guess which one their friend is in
If multiple friends are playing then roblox would just pick a random one to have the player join
Roblox isn’t going to put the player in with their friend 100% of the time anyway
If the server is full the player wouldn’t even be able to tell
The option would look something like this:
Image brought to you by my super ultra epic inspect element skillz