[Suicide Junkie]

The massive engine disruptors are pretty good, but you need a dedicated ship for them.

In my mod, I boosted the Planetary shields from 2000 to 20k, 50k and 75k (depending on tech level), so they are actually useful.
Hopefully, I will be able to mod planetary armor facilities, as well as phased planetary shield facilities.
Until then, planetary shields still work against AIs.