In a recent session, I found myself using the Psion at-will Dimensional Scramble to reposition my allies in a fight among a bunch of floating platforms. I could hit an ally with the attack and teleport them from one platform to the other. They would take damage from this, but that damage was easier to deal with than the skill checks to jump from platform to platform. This tactic was made more difficult by the fact that the allies I was shifting this way had a very high Fortitude defence, making it harder to hit them with the attack.
If I'm making an attack against an ally, is there anything my ally can do to make it easier for me to hit them with that attack?
This question makes it pretty clear that there isn't any RAW saying whether or not you can automatically take the hit if you want, but I'm looking for any other options that might allow a player to make the attack easier, even if it isn't an automatic hit.