What is the final legacy of Marcion at the end?

[Giuseppe]

The end times were imminent, about to happen any time.

The exact thing denied by Mark 13:7:

When you hear of wars and rumors of wars, do not be alarmed. Such things must happen, but the end is still to come

Even if the abomination etc is Titus, the false Christs are Lukuas of Cyrene and Bar-Kokhba.

[JarekS]

Marcion taught the church how to organize efficiently, creating a huge threat to all of their competitors. He was the factor that required them to improve their performance in all aspects of the project.
Internal conflicts are always odious and must be concealed by historical policy, but they have a beneficial effect on accelerating progress and achieving efficiency.
Thanks to him, orthodoxy was established, allowing Christianity to develop into a structure attractive to imperial Rome during its slow decline.