Hi Jaume,
1. Automatic gallery creation is easily doable. I have posted the codes in the forum for that for users. In your case, @ravi1987 will post the code for BuddyPress group creation trigger.

2. Technically, we have the functionality to allow mixed gallery. But we don’t have any plans to enable it anytime soon. The reason is User interface. Displaying mixed media in single gallery is going to make the layout look awful and that’s the reason we haven’t enabled it.

Hope that helps.

Hi Alex,
The code he linked on github is part of BuddyPress Core.
I will talk to one of my colleagues and see if he is available, then we can do it, otherwise you may want to post it on BuddyPress.org forums and hope that someone might pick the idea.

Thank you
Brajesh

Hi Joshua,
Thank you for confirming. Ravi is looking at it and we may have a solution tomorrow.

Thank you
Brajesh