I've turned them around against a different wall and finished the veneering (although they still need finishing). This seems to work better as they have more room to breathe. The treble seems improved, which is a surprise, and the overall balance is better too. As you can see from the picture, they are sitting on my hardwood floor, which is less than ideal.

They don't have any feet or isolation of any kind - any ideas as to what I should do there?

The crossover is still loose, and needs a box, and I plan to remove the shelves and build something more effective for CD storage so the speakers are truly in the corner.

I'm constantly amazed at how much more I'm hearing from all my records. It's hard to stop listening - which is the point, I guess