OK, feedback time. I have an idea for a new class, and I need some input.
First, background cosmology: The "planes" exist as virtual-scapes, kind of like a cross between the Metaverse and the Matrix. When you "plane-shift", you're projecting yourself into one of these virtual realities, populated by artificial intelligences. It's a dangerous pastime, however, since (like the Matrix) you can be killed if your virtual self is killed.
So, the idea is a class (working title is Virtualist, but I don't think I actually like that) that attunes/downloads different outer planes, kind of like a mash-up between an Ardent, a Horizon Walker, and a Planar Shepherd. Planar attunement grants several benefits that scale with level: plane-specific buffs (scaling), planar bubbles (mid levels), and "wildshaping" into relevant outsiders (high levels). In the context of the flavor above, it's like you attune yourself to the Neo plane, download it, and now you know kung fu.
Prestige classes would be Virtual Being (dual-progression with Holomancer, based on Psion Uncarnate) and Philoticist (dual-progression with DivHead, based on War Weaver).
Now, feedback.
a) Is this a cool idea, something you could see playing?
b) Is it redundant with other classes I already have? (PrCs don't count, I haven't written them yet and they can change)
c) Should it be a PrC or a base class?
d) Is it over/underpowered? (Note that there will be no Dal Quor for time trait abuse. Planes will be standard Planescape cosmology.)