Nether portals=8x less wiring.
For true point to point teleportation, you're stuck with tesseracts.
As Reika has said before, he won't make his own portals because the energy required would be ridiculous.
However, I like the orbital microwave sattelite idea. Maybe it could use an antenna (solar tower) that increases efficiency as the area increases..
But how would you get the sattelite into orbit? Galacticraft? Then we're stuck with cross mod dependance again.
Hrm. Good question. I suppose I'd use one of his railguns to "shoot" it up in the air faster than you can see.
Btw, if we could successfully capture specific neutrinos, you could just point your neutrino beam directly at the receiver, through basically anything (dirt, cobble, lead, continents) and it would essentially all reach its target anyway. Beefcake!