My issue with banning anything "broken" is that it comes down to difference of opinion and play style. I, for one will not ban any model as the purpose of leagues is to play what you own. Ivarforkbeard A+ on your reply. As far as the caster problems, according to the Journeyman league rules you can't change/swap your caster till week four. SO the problem of Kharchev at 15 pts is moot.
As far as the battle boxes, they are balanced. Regardless of tricks each have the whole purpose of PP putting them out was to make sure that you can play games right out of the box.