I would like to see a EFUSS skill called 'jumping', which works slightly like climbing, but allows horizontal movement (in a very small area) to jump over barricades, boxes, and other obstacles. I think that this could be applicable in many areas, such as in quests or DM events, and lead to other ways to get around obstacles besides 'BREAK IT DOWN' or 'BLOW IT UP WITH SPELLS'.
Helluva pain in the ass to start putting in places and areas for this to happen. I don't see anyone wanting to ever put that much time into such. Every single front, side and what not of a box or place to jump needs to be marked and painted. It is not worth something like that.