I've only played a few rounds but here are my initial impressions.
Just got myself stuck in a wall with Timed Teleseed aura, but was able to teleport myself out of the wall. Still seemed like a bug though. Even without the bug, I don't see myself picking up that aura next time I see it. It kept interrupting me and getting me hurt. I guess I'm kind of a risk-averse roguelike player.
I think roguelikes like TS are all about the decisions when it comes to "upgrades" like the auras. I'm curious why you decided to only give one option for the auras rather than making it a choice like the crystal rooms. To emphasize that picking up the aura is optional?