I still haven't finished my first playthrough of FE Engage.
The core gameplay is fun (although I do have issues, mainly that I think Emblem Rings seriously undermine FE's core simplicity), but man the story is such a drag. I put up with Three House's stretched out pacing because the story was engaging enough to keep me invested, but in Engage the story feels like it's wasting my time more then anything else.
It's so hard to stay motivated to keep playing when every level starts and ends with a long cutscene I don't care that much about. I do think, ironically, that it'll make second and third playthroughs much more palatable since I won't have any qualms skipping cutscenes on second playthrough.