I'm having a lot of fun with Radiant. There are a lot of unique mechanics going on and the synergies between light and blight and diseases makes for some interesting tactical play. (The fact that Constitution is a main stat for them makes it a great choice to try out my Naloren rework, too, but that's besides the point
So, let me start by saying here that I am, by no means, an artist of any sort. But, I have had a bit of experience working with filters and effects while creating my own talent icons, and I could give the Radiant icons a pass over and touch them up a bit, if you like.
The icons you have now are not bad or anything, I just think they could use a little... something?
I went ahead and did icons for Irradiate and Reactor, so you can see an example. It's not much more than some edge effects, lighting and noise, but I think it makes them look more polished. My new images are in the attached zip, along with your originals, for comparison.
If you are not interested, I won't be offended at all. If you like it, though, let me know, and I can do the rest of the icons for the class, as well. I actually find this kind of work very meditative, but it's also time consuming, so I'll wait for your opinion before I work on any more.