Just a thought I had that caused me to avoid taking PS as early as I like it - currently, you must shoot a volley of 3 bolts with every repeater attack.
With Precise Shot, you're often overkilling your target and wasting bolts. However, without it, and assuming multiple enemies in a line, the bolts continue through a dead enemy toward your target.
It's weird playing at low levels as though I already have IPS in the sense of targetting the enemy at the back.
No suggested feat change, just a caution against taking it too many levels away from IPS.
I understand the marginal utility of using it to kill the caster at the back, but for me it's outweighed by the wasted bolts.