IMO - If he's not charged in connection with Madeleine's abduction/murder then CB will have grounds to sue the media. Despite his prior criminal activities, his personal life has been publicly invaded & scrutinised to such an extent that his name & face will be associated with "the murder of Madeleine McCann" for the foreseeable future.
See case A. v Norway 28070/06.
Let's hope German police obtain the necessary evidence to nail CB & his co-conspirators.
Worth a try if he feels that way inclined, I'm sure he won't have a problem in people raising money for him to live on while his (pro bono) legal team are knocking them down one after another.
What a laugh if the first to fall was Amaral.
However I am more interested in your thinking that he may have had co-conspirators. Just from what I know of the files and subsequent events I think there are grounds for suspecting that Madeleine's abductor was not acting alone.
It will certainly be interesting to watch how the case against Brueckner progresses; like you I wish the German police well with their investigation.