Would love to see an update to this, addressing the issue mentioned below, and adding in the to-do list features. Would be fantastic!

I hope you are still working on this! I love it!

I have used this forever. i started using this because addons such as bongos and the like, I tried them all, would set up their bars differently than the blizzard default. So when I would play on another machine or change addons I would have to change where every single one of my buttons were because bongos would have them on half of bar 2 and half on bottom right bar and another addon had them mapped differently and none were mapped to the default blizzard bars.

So I went with the default bars, and found this to give me back my screen real estate.

But now I am having problems. The bars dont show on mouseover sometimes. If I shapeshift in and out of a form on my Druid the bars will then show on mousover. This doesn't seem to be druid related because I experience this on all of my characters. With non druid classes i have to reload my UI to make them show again.

If you can get this fixed I would love you forever.

Thanx for what is probably the simplest and most useful addon ever.

Bongos already has an option to hide frames unless on mouseover...
Unlock the bars, right click on the bar you want to edit, and fiddle with the two opacity options.

I have been looking for a mod like this a few weeks now...Although atm it can do what i want, i see that your to do list has just what i need on it. Im wanting to hide the 2 side bars i only use about 5 buttons on each row to show food,water,buffs and mana gem macros and i only want them to show on mouseover...This mod will be perfect when complete.

I have gone through the whole mod phase where I had all the cool mods and now i find myself using the default UI with small mods like fancybar,spellbinder,simple unit frames and a few others and my ui is really clean..I will be checking often for the update hope you can get it done...Thx for the great mod..........

Will this work with bar addons like Bongos?