@pjnu – “to have the social network be secondary to their wordpress blog, what options are available”
You would need to create a child theme for 1.2 bp default theme. Copy the header.php from 1.2 bp-default theme into your child theme. Tweak navigation accordingly or create primary and secondary navigation to taste.
“I feel like this new version is somewhat limiting in terms of customization. “
My opinion is that it can be challenging but the sky’s the limit