There have been some strides in GM work in mosquitoes. One path was based on sterile males, to inhibit breeding. Another path involved making a mosquito that could not be a disease vector.
You might have seen pictures of bioluminescent (glow-in-the-dark) bunnies and pigs. There’s no benefit to that, except as an easily traceable trait. However, if you could produce generations of glow-in-the-dark mosquitoes, we’d have bloodsuckers that would be more easily swatted.
I thought many years ago, when the USA was discussing Star Wars laser defence - a more practical application would be a device that detects mosquitos or other flying pests and zaps them with a laser so their innard boil. Mini-star-wars.
If you could make mosquitos identify themselves by glow in the dark or when hit with an idenfication beam, that would be great - but more likely all it would do is make bioluminescence a survival disadvantage.
Of course, a corrollary device would sit on the kitchen ceiling and zap any cockroach that showed itself.
When can I buy one… 
You both forgot “Cute kittens and puppies”. An obvious risk of deadly “SKWEEE! Ain’t that CUTE!” responses.