Ethereal Ice, what dance blades did you get? Not all Dance blades are thinline. E.g., MK Dance are, but Ultima Dance are not, last I knew.
Regardless, as long as you don't jump, I bet you come to love them. It just takes time to get used to everything.
BTW, I wouldn't keep changing back and forth between hollow radii. Every time you switch, you waste a huge amount of metal, and thereby reduce blade lifetime.
Also, depending on how and whether the sharpener (slightly) dulls the blades after sharpening them, and whether or not he/she uses a "fine grit" wheel, both 1/2" and 7/16" can feel quite sharp. Of course, if the sharpener leaves them super-sharp, you may not be able to walk off-ice at all without blade guards on, else you bend the edge. Which is why most sharpeners either dull the edge a bit, and/or use a medium grit wheel.
I used to like my blades. But it is so much more convenient to be able to walk short distances off the ice, especially since I started working as a rink guard. Many coaches find that convenient too. Rink guards and coaches come on and off the ice too often to do otherwise. The truth is, I think I used super-sharp blades to compensate for poor body alignment. If you align everything right, you don't need to be nearly as sharp.
OTOH, I simply cannot skate at all well on our rental skates. They feel like they have no edge, and I slip and slide all over the place. I am very confused about how some of the LTS students manage as well as they do on rentals. I guess that means I am still not aligned quite right. Maybe it is good practice to skate on dull blades?