When a wan conjurers a vortex to summon somebody or
to relocate to someone, would it be cool that if the
target person would be casting the opposite spell, they
would have 2x chance on succeeding.

Lemme illustrate (in chronological order):

1. A casts summon to B, and tells B I'm summing now.
2. B starts casting relocate to A
3. The two vortexes connect half the time usually
required and B is relocated to A.

OR:

Give wanderers a spell to create a stable vortex like
a dimension door through continents which would work
like this:
Two persons casting the same spell, connecting
two vortexes. After the vortex is complete, people in the
same party could travel throught it, but as soon as either
of the casters of the vortex move into it, it collapses
on that side. This would work half the time it normally
takes to shoot-a-dude through.


~/A