What makes them more interesting then islands?
Islands had crazy power ups to though in a less random nature... my problem is I'm a old hand. I dissect what it is I am looking at game play wise and then evaluate it. The tower doesn't have many interesting enemies and few that pose any kind of threat unless you almost purposely weaken yourself by choosing a poor build.
It lacks something... I really don't see it being much more popular then visions beyond it being easier or at least it appears to be easier so far on beta.