(I tried to find the original thread where the changes were discussed at the time... but no such luck.)
For those who weren't on yet, Teleportation used to cost a straight 50 energy per jump. This was changed to a percentage of your max energy, so that as you level up, it get more expensive (and of course, each level of Tele. lessens the percentage).
So, we've had plenty of time to get a feel of it. Any thoughts? Has it greatly changed how you use Teleportation? Do you avoid leveling to keep costs down?