Super-powered missiles are fine if they are limited. If I sacrifice significant OP for a few missiles, they better erase a ship when I fire them. Most non-regenerating missiles are not worth their OP cost without high Missile Specialization. If missiles should not be super-powered, they should either all regenerate or cost almost no OP to use.
Before the missile buff in 0.65, missiles were a waste of OP.
Only problem with 3 OP cost Atropos is 2000 damage is not quite enough to kill many things. Aside from that, Atropos is one of the few missiles that is good without Missile Specialization, at least for the Scarab.