I get that it is impossible to avoid all potential crazy stuff. The idea is to encourage friendly lists and ban some if the worst offenders. Yes, you will have the potential to creep in some broken stuff, but push the idea of friendly.
I think it is possible to harvest points on ships, but if you don't make the points too high it can't be too crazy. I mean, how many HWKs and Punishers can people add and still win games?