Profile tweaks should allow the user to decide which tab of theirs is the default, your talking about setting a default for everyone right?
Might be something for that already in:
"{jrProfile_menu}"
https://www.jamroom.net/the-jamroom-network/documentation/development/1997/jrprofile-menu
--
couldn't see anything directly in that function, so tried this out in:
/skins/YOUR SKIN/profile_index.tpl
{* default index for profile *}
<div class="col9 last">
{jrCore_include module="jrAction" template="item_index.tpl"}
</div>
Thats what the default skin looks like, so i changed it to this:
{* default index for profile *}
<div class="col9 last">
{jrCore_include module="jrAction" template="item_index.tpl"}
this is something
{jrCore_location('http://jr500.iixxii.cc/two/flickr')}
</div>
hoping that instead of displaying the default index page, the redirect would kick-in. It did.
So you could put a check for the quota id coming in, then redirect by depending on the quota id like that.
Would that work in your situation?