The main strength of the fighters lies in the ability to avoid detection. However you are now increasing sensor ranges for high resolutions while also forcing use of shorter range missiles which may make them completely useless. Not to mention they won't have that much range so it will be much easier to run down the carriers.
You can't really look at the changes in a vacuum. For instance, greatly reducing the range of missiles, if you made no other changes, would make fighters far more effective. Missile fighters already work best as providing a range boost for more efficient shorter range missiles, and this will increase the efficiency bonus of short range missiles. Less efficient missile engines don't just mean all missiles are less efficient, it means the longer range a missile is the less efficient it becomes, and missile fighters are currently the king of short range missile combat.
The sensor change is also a mixed bag for fighters. It improves sensors with lower resolutions, but it also improves smaller sized sensors, like the kinds fighters (even dedicated sensor fighters) would mount. Using the numbers in the thread, a size 10 anti-fighter (res 5) sensor will now actually see its range go down, while a size 2 resolution 100 sensor would go up. Warships will frequently have size 10+ sensors, whereas fighters wouldn't and gunboats barely would.
Edit: Thinking about it, the sensor change combined with the reduced missile range change might well mean space superiority fighters finally become viable, since they could carry small anti fighter missiles in to intercept missile fighters before they could launch.