Well at least Makoto could be at ease that he got some extra contract in case he needs some help in the future (if he really ever need one, who know)
For that case, yeah their history is pretty bad, but considering how things are currently, better leave that matter as "this is this, that is that", Makoto isn't the "Hero who punishes every evil all the time", as long as they do nothing wrong, then so be it, if they do wrong again, then it's another story.
If anything, better accept the "wife and daughters got cursed and became mads for pretty long time" as their punishment, for now.
Another thing to remember is that, Rambrandt is one of the help for Makoto on the Noble Side of things, so trying to punish/getting rid of them only harm Makoto for now.