The only 2 techs that do not provide any benefit after certain level (12 for laser, 8 for hyperspace) could be given some slight bonus so that leveling them isn't completely useless (good example is added % production bonus to plasma tech). There is a good and accepted idea for hyperspace, so I will suggest one for laser.
My idea is that you get 1% lower construction times per each level of laser technology to both buildings and fleet/defense. (possible explanation: higher laser tech = more energy efficient and precise lasers = faster construction by robots (nanites))
Alternatively, since research times are the biggest problem at the moment, each level could decrease research times by 1%. (possible explanation: similar to above, we can see on intergalactic tech image that planets are communicating via some sort of laser-beam )
Of course, the rate itself isn't fixed, it can be more or less than 1%.
My idea is that you get 1% lower construction times per each level of laser technology to both buildings and fleet/defense. (possible explanation: higher laser tech = more energy efficient and precise lasers = faster construction by robots (nanites))
Alternatively, since research times are the biggest problem at the moment, each level could decrease research times by 1%. (possible explanation: similar to above, we can see on intergalactic tech image that planets are communicating via some sort of laser-beam )
Of course, the rate itself isn't fixed, it can be more or less than 1%.