That is... actually quite interesting. No heats for a miss is somewhat weird, but consider the hefty additional heat of the equipment it would be acceptable. It could be explained that stopped to shoot earlier after the aim was gone wrong and did not generates too much heats, so it isn't ridiculous that much either. Other than that it's more like the stable version of the standard laser pulse module. Although it gets +2 damage but again, it requires +4 heat and it costs even more weight and size, while the module's size is not changed at all regardless of the size and class of the laser.
If it got a critical on the module then it just got disabled, rather than explodes as the standard laser pulse module, right? And it doesn't harm the laser it was attached as well?
And although obvious but, it's not compatible with the standard laser pulse module so a laser can be attached by either standard or improved but not both, right?
Also apart the difference it will follows the same traits with the standard module, such as can only added to a single laser weapon and also each laser weapon can only have up to one of those, non-heat tracking units have to also mounts extra heat sink for 4 more heat, not considerd as the separate component with the laser it was attached when count the numbers of the weapon mount, DOES counts for the weight of the weapon for the targeting computer(the standard laser pulse module does as well, unlike many other weapon attachment type of equipments), right?