On any SE domain, I can click my profile link in the top bar and I'm presented with a network profile link (to https://stackexchange.com/users/[0-9]+/ ):
But when I'm on https://stackexchange.com/ itself, I can't find any way to reach my network profile. There is no link in the top bar, nor in the footer, nowhere: I'm forced to click a link to another domain, then reach my profile, then the network profile.
Proposal: add a network profile link in the stackexchange.com top bar. For instance next to "Stack Exhange" in the "Current community" drop down, so that you don't have to design a special "Inbox" or "Achievements" dropdown. There is already a custom "chat" link anyway:
Use case: I'm looking for a post but I don't remember where it was. I first use the SE-wide search from the stackexchange.com main page, but I don't nail it. I want to reach my network profile to search within my favorites.