They have said previously that they had no intention to reduce it. They could change it when they ajust salvage since it requires AP to begin with. However you can be certain that if they allow you to enter solo in assault, the price per permit is going to skyrocket so I'm not sure if it is a good thing. What do people do need that for anyway ? Noone uses the warps anymore, you can craft a nashmau earring if you want to do the occasional einherjar, and alexadrite farming ; salvage requires 3 anyway so the guy that does salvage can easily get AP right before the runs with his group. Then there is the mythic upgraders but let's be honest those that do it probably all own serveral chars.