Josh, happy to help by chiming in here and hopefully that spurs on more conversation. If I might voice my thoughts after seeing hundreds of Jive communities deployed... go cloud! There are so many out of the box ways to configure JiveX now in cloud, or via our widget/tile infrastructure, that it by far offers the most benefit to your teams in the short and long term.
As for what you're asking for, our cloud solution allows for your to create custom navigation bar menu items (single click or drop down menus) to lead to anything within the community you'd like. And since every single page on JiveX has it's own unique URL, you should easily be able to create a menu that links right to a users authored content, participated content, etc.
Here is an example of what I'm referring to, but please do let me know if this is what you were looking for or if it was something different: