Fix all CS issues

Well. I think this is the PR everybody always dreamed of.

Bye Scrutinizer issues. Hope we won't see you anymore. :wave: 
Why don't you want to ? It not blocking anyway.
Those arguments are not casted, so it's not a "null" fallback. And as there's arguments with no default after, they are always called.
The real problem to deal with is when we make the mistake on a casted argument.