The Quran is complete and fully detailed for those who have "absolutely no doubt concerning its authority and authenticity. And it leaves no doubts lingering in a seeking mind. It is a Guide for those who wish to journey through life in honor and security." For those who do not, they can have their pirs, rasuls, Bukhari's and other holy persons!
Qadiani had no new message because why would Allah send another prophet/messenger/rasul when he has already given us His completed Message?