The OP cited the Hadith about al-Mubashshiraat meaning the visions/dreams that a Believer sees which is one of the remaining parts of Nubuwwah. Some people, such as Jawed Ghamidi and Eng. Muhammad Ali Mirza, cite this Hadith as a proof that there is no Tahdith, Ilham, and Kashaf for this Umma, as all that remains from Nubuwwah is Ru'ya as-Sadiqa. I've even heard the latter claim that Sayyidina Umar رضى الله عنه was not a Muhaddath. He interprets the Hadith "If there was one (Muhaddath) in my Umma it would be Umar b. al-Khattab" as negation rather than affirmation that Umar is a Muhaddath, meaning, there were Muhaddathoon in the previous Ummam, but there is none in my Umma, if there was to be, then Umar would be one, but he is not. But this interpretation of the said Engineer is novel and goes against majority of Ulama who have affirmed that Umar was a Muhaddath.
But upon scrutinous deliberation of the matter, I come to the conclusion that the Prophet صلى الله عليه وسلم was not denying the occurrence of Tahdith, Ilham and Kashaf for the Umma when he said "Nothing remains of Nubuwwah except good dreams", because in that Hadith he is talking about the disclosing of matters of the unseen (Mughayibaat). Keep in mind that it is not necessary that a person who experiences Ilham or Sharh-al-Sadr is receiving information of the unseen, rather, he is receiving guidance to an affair that has already been revealed as being true, or being guided to do something Allah wants him to do. For example, the Sharh-al-Sadr of Sayyidina Abi Bakr رضى الله عنه to fight the Arab tribes refusing to pay Zakat. That is not an example of Allah giving news of the Unseen to Abi Bakr رضى الله عنه, because news of the unseen is only revealed upon a Rasul (72:26-27), or an ordinary Believer can acquire some premonition of the unseen through a good dream.