I use teleport totaly without fear at level 13, my chances of dieing to it are pretty damn slim I feel even when I am that defenseless. By 30 you should be able to get out of just about anywhere you can teleport into pretty much every time.

I also use teleport to hunt not chase, ie I prep up and spam c tel;whe until I see someone then run at them. It can be very effectivee and at hero there is almost no risk at all to teleport not that there isn't a chance to land somewhere nasty but the number of rooms that are going to foob you as a percent of the rooms that you can teleport into is very very low at that point you have to apply how scary dieing really is for you some players feel any mob deaths for any reason are too many, me I figure if you don't generally play to con death why should you care?