i think the amount of editing would've made it better or at least decent if focused more on the other mythos. also let's face the fact that the parents weren't really focused that much on the first movie but more on the mythos. you have peter care about his loved ones even bearing his guilt towards uncle ben's death and focused on saving people and while TASM 2 was pretty fault was able to get the characters right for the most part and even capturing spiderman well on screen and handle peter and the romance well.
it's not that the parents were a bad idea it's more like the execution of them.