Thanks for the comments, Digga.
The spells list with names is easy to deal with - you are not the first person to ask for that feature so I think it would be a good window to update and offer a new optional download for. Leave that one with me for a day or so.
The horizontal buff bar with names under is a real headache to handle and would be hard to integrate into the standard release of the UI. What happens is that window completely ignores the x,y coordinates in the XML and merely fits the buff icons into the smallest available space anchored in the top right. The reason they work in your UI there is that the icons are 40px wide (with a 1px gap between each) so the writing is just small enough to fit in the space underneath. Going down to 32px icons does not leave enough space for writing under a horizontal bar - I tried it. The only way to control the spacing is to increase the size of the BlueIconBackground and RedIconBackground textures to 64px and have transparent areas 16px on each side then use the DecalOffset feature to get the spell icons centered... but that texture is shared with the spell book so you would have to repeat spacing changes there too. The buff bar would then be twice as wide as it is at the moment but have plenty of room for text. As I said - too much of a headache to do for an optional public release. Your best bet is to rearrange your screen layout to fit in the vertical buff bar with names.
As for the bars, they are 8px high at the moment but I copied the default ui bars and they are shaded heavily on the top and bottom edges - not the most visible I agree. It is not hard to change the graphics to offer more visible bars, for example the ones in the Lodi Dodi UI are simple rectangles. As long as we keep the 4px end-caps, it would be possible to do a high-vis bar modification very simply.
If you are using a widescreen monitor, I have an alternative suggestion... I play at 1920x1200 and am working on a more visible and relaxed fit for my own personal use and have reworked the gauges to fit with the SARS4MAC UI texture. This gauge is a lot more visible but is fatter and the end caps are wider so these changes are ONLY suitable for a widescreen monitor. Here is a sample pic and if you are prepared to wait a week or so, it will be available as a general release "as seen"... please bear in mind this is still a work in progress - I have not yet put the stats down the centre of the hotbutton window and the image is too dark when saved but it will give you the idea. This is a photoshop prototype as you can see from the duplicated bars in the group window.