Is there a mod that would in otherwords increase alot of the klingons ship disruptor beam range? I just figured the Negh'var would have long range disruptors and the vor'cha would have a disruptor beam and then two cannons aswell as for and aft torps
Star Trek game designers, including the ones for this mod, tend to concentrate more on gameplay and balance first and adherence to canon as a distant second, hence why some ships don't necessarily look the way you might expect.
As for a mod akin to what you describe, I don't think anyone has come up with anything like that. It shouldn't be too hard for you to learn how to do it yourself.