Can a mod put this in the first post, apparently you can't edit a post after 5760 minutes.
Since I like to whip up random greasemonkey scripts. I created a little script to display the login box inside the page on Avenue. It also edits a bit of the login form's properties to open the resulting page inside the same tab.
You will need Firefox/Chrome
If you use Firefox, you will need Greasemonkey (Firefox Addon)
After you've installed that, you can go to this page:
http://userscripts.org/scripts/show/86673
Or download it from here (first link):
https://github.com/AfzalivE/My-GM-Scripts
And click the "Install" button and then "install" again when the box pops up. Load up the Avenue page to see that login box in front of you.
Lemme know if you have more suggestions for little things in Mac's pages. I could probably do the same for MUGSI.
Enjoy....or don't. whichever.
Update: Works with the new avenue design on Firefox and Chrome.