It has received no changes for so long. And the second it came to y2. People started whining about hit op it isn't. It's the same it's always been. A very well balanced, well designed, effective, all-around exotic. You can do very well with it or you can do awfully with it. Kinda like the halo BR. A skilled band will do well with it, but that dosent mean it's op just because it's not super hard to use.
Cause other options were viable, and the new (and not nearly as powerful y2 guns weren't out yet) for that 1 week before ttk, Mida was still godly, but only the respected Mida users beforehand knew that.