In this very particular case though, where you're trying to represent spatial/light distortion...I think you'd be hard pressed to find a way to make something representative of distortion, without using distortion, that would still look as good (or better) if actual distortion were layered on top of it. This conceptualization of a Black Hole is visually interesting, and might be achievable in a way that could work everyone's hardware...but it's very different from something like Einstein Rings created by gravitational lensing that could only be created with some sort of distortion effect.
What about something like having a swirling ring-shaped particle effect that everyone sees, then adding a distortion effect inside the ring on systems that can handle it? Lower-end systems would see the wormhole as a swirling ring of energy with a clear center that the target appears out of, while high-end rigs would see the enemy appear out of a distortion field within the ring. Both would convey the idea that the target has been pulled through a vortex, the high quality effect would just look cooler...
Cascade, level 50 Blaster (NRG/NRG since before it was cool)
Mechmeister, level 50 Bots / Traps MM
FAR too many non-50 alts to name
[u]Arcs[u]
The Scavenger Hunt: 187076
The Instant Lair Delivery Service: 206636
Posted
Hate to drag this thing back up, but I noticed the effect that thermal buffs had and thought the same effect could be applied to Grav.
"Samual_Tow - Be disappointed all you want, people. You just don't appreciate the miracles that are taking place here."
Cascade, level 50 Blaster (NRG/NRG since before it was cool)
Mechmeister, level 50 Bots / Traps MM
FAR too many non-50 alts to name
[u]Arcs[u]
The Scavenger Hunt: 187076
The Instant Lair Delivery Service: 206636