Which they have stated that they are not fans of how procs work anyway in a situation like this. Not that I want to see PPM change at all, but i would much rather have glue arrow be location based and lose some proc effectiveness. Also, TA doesn't have damage in their glue arrow, only blasters. So the only procs are -rech, and one damage proc, not worth forcing it to be target based (which also really screws up placement, and can't hit flyers, and having to use entangle arrow first for flyers is also annoying).
So yeah,. it should be location based, not target based. "procs" should not be factored to making a base power MUCH more useful.