Well the solution is easy: we just see which of the filterlist publishers are trustworthy and which aren't, and have the extension automatically download this l

Well the solution is easy: we just see which of the filterlist publishers are trustworthy and which aren't, and have the extension automatically download this listlist and apply it to its list of filterlists. Of course you need to be sure that the listlist is of trustworthy origin, but you can just check if the supplier of the listlist is itself on the listlist.