I'll post here what I posted in the Merc forums.
This is a nerf in PvP unless the animation is tweaked to remove the targeting indicator on the enemy and the laser beam sight thing removed.
This is pretty indisputable, because currently if it's a cut and paste job the things evidenced below are quite a hindrance to PvP -far- more than a 10% Nerf to damage on TM.
Although not the way I'd of worded it, this is 100% correct.
Fusion Missile Animation becoming Tracer Missile animation is a bad move for PvP'ers. They should of giving a new animation to Tracer Missile instead of being lazy and just switching them around.
"Oh I've a red laser sight on me, time to cast a heal/break LoS in anticipation of being hit by a Tracer Missile."
Retarded game designing.