One nice thing I've seen done with Power Auras is to move the aura texture away from the middle of the screen. For example, for SS, you could put a "glow" texture around your character portrait when SS is below 15 seconds. It's still a small amount of screen clutter, but I like having only critical things in the center of my screen.
Also, with regards to clash resolution, the addon actively monitors your cooldown timers and compares them to your current GCD. If two items are expected to come off of cooldown during the same GCD, it will recommend the higher priority. Basically, if you follow the addon exactly, you will maintain the highest dps clash resolutions. It's a fairly simple system, so no need to complicate it.
@beatific - The addon will also recommend SS at the priority you specify if it is below a certain time (user customizable in the options). I understand that on some fights, you might want to change the priority dynamically, which you will want the macro and/or some kind of on-screen notification when below a certain time remaining. Just be aware that the basic functionality is built into the addon already.
I'm keeping tabs on the possible changes to the FCFS rotation that Ghostcrawler has talked about over the last month or so, and if possible, will be updating the addon to work with any changes as soon as they are released. There IS a possibility that the changes could render a large portion of this addon's functionality useless, but if that is the case, I will modify it however necessary to keep it useful.
A bit of a self-plug to leave with. I wrote this addon initially to help our ret paladin test rotations on a target dummy during the 3.1 beta. She liked it so much that I put the time into cleaning it up and releasing it. I now can take a small amount of credit for her dps
WMO Paladin DPS Rankings - America (Ceralune - Irregulars)
/bragging
Cheers all.