To have motion blur in Premiere Pro, it's always about workaround solutions, which sometimes end up making things choppy. Changing the Shutter Angle under the Transform effect sometimes messes up the clip position, or sometimes it bugs up the entire animation in a myriad of different ways. Nesting the clips just adds another unnecessary step nobody asked for. And going to After Effects just for this just adds more complications and delays.
For years, many users are suffering because of the lack of motion blur. When we add movement in the clip, we just need that good old movement blur like that of After Effects. A dedicated one-click solution. Nothing less. I cannot, for the life of me, understand how come we don't have such a basic thing.