Yeah. It's not great, but I've been working on 3.0 for an extremely long time, and I had to decide what to put out in the first version. I'm sure I've missed things I should have added, and vice-versa.
I kind of like the idea of strongly encouraging people to go check out their achievement profile pages. But forcing them on a path/flow around a site is bad, too.
Unless it turns out I've missed anything critical, 3.1 will be released -- probably -- at the end of Feb/first week of March. That ticket above is going in 3.1.
It is possible to customise the HTML / CSS / JS for the notifications pop-up. I'm literally working on documentation right now. Short term, if you're capable with HTML / CSS / JS, it should be possible to implement some sort of solution.