in case you guys didn't know, those are all seperate plugins and customizable to some degree--for instance, the recast trackers can be positioned anywhere on screen, and you can designate the font size as well. You can even turn off some things from being displayed with some plugins. More customization may be possible with further development.
The point of the SS is that it can and IS being done already. And by people who do this stuff in their free time, which seems to suggest it would not be rocket science to a paid staff of developers.....
[Edit]
you can also set tranparency of background for the overlays of most plugins (or not use a bg color at all). As for not being able to determine what cure is appropriate....then you just aren't paying attention. You can see the exact numeric value of someone's HP. So....you know what their HP is when full---just takes some simple math to know not to hit somone with a Cure6 when they only about 400 hp from full. Before you go tearing down the work these guys have thrown into these programs....perhaps you should read up on how they actually work, even if you have no intention of using them. If nothing else, do it out of respect for their dedication and so you actually know what you are criticizing.
