Since ships can be locked to a specific missile damage type buff it makes sense that there would be rigs to increase a specific missile damage type.
Shield rigs have damage specific resists, why not give us missile rigs that are damage specific?
This has probably already been addressed. I searched and didn’t see. Possibly posting in the wrong place.
No, you’re not getting a damage rig that bypasses stacking penalties. 
Insipid.
Insipid? It was interesting enough for you to open, read, and reply to.
So the bypass of stacking is why. Thanks for the info.
Well I don’t know about the rig, but, if you’re using missiles in PvP you’ve already lost.
Stacking penalties are applied to individual properties, so it can’t be bypassed.
Regarding the suggestion: Why?
Except for some ships that have bonuses to some damage types (ex. Drake), you have the flexibility to change damage type with a simple reload of the launchers and have equal DPS. That’s very useful for PvP.
For PvE, increasing significantly one damage type that deals with mission/local rats in one specific region of space creates a significant increase in destroyed ships per hour. Sure, you’ll get a bit more ISK, but everyone else will, which creates inflation (your ISK will be worth less).