A few thoughts on the ioun stone animations.
1) The height at which the animation floats is optimized for taller characters, which means it floats too high above the heads of dwarves, gnomes and halflings. Similarly, it'll be in the wrong place for polymorphed characters. I ran into the same problem. Racial height differences can be addressed with EFFs, obviously, but the polymorph issue's more awkward, I suspect.
2) The yellowish animation for the golden stone leaves rather a distinct trail. It could possibly do with a little more transparency or translucency. (This actually applies to most of the trails, I think, but this one most specifically.)
3) I've noticed the animation disappearing on occasion, but I can't recreate it or pin down what causes it. Will report back if I find out.
4) Any chance of a WeiDU version and mod support? I'd like to remove the ioun stone component from my mod, because yours are way better, but I can't do that until there's a WeiDU package. I'm willing to code it up if you're interested, along with support for ioun stones added by mods, and I can either replace the component in my mod or give you a standalone package to host here. (Or both.)