[jowe01]

Or do what I did in my mod:
Reduce the targeting of larger mounts by -10 for each level and reduce combat sensors and ECM to 15/30/45. This way, the evasive capacities of smaller ships become much more valuable. The big, bad ships can still be used for the purpose for which they were used in WW1, WW2 and maybe even the Gulf War: to attack heavily fortified, but imobile positions (starbases, planets) and other big bad ships. However, they would have a harder time hitting small agile ships. The mod is quite realistic, balanced and leads to some interesting "Shark against Piranha" battles...