and I agree, in the movies they made james seem bad
oh, but remember.... DUMBLEDOR WANTED TO PLAY MATCH MAKER SO HE MADE JAMES HEAD BY SO HE WOULD MATURE AND LILY WOULD LIKE HIM BUT I FEEL KINDA SORRY FOR REMUS I MEAN SERIOUSLY REMUS WAS AWESOME I CAN'T BELIVE DUMBLEDORE WOULD JUST GIVE IT TO JAMES! LIKE THATS ALSO WHY RON AND HERMIONE WERE PREFECTS CAUSE DUMBLEDORES A MATCH MAKER AND NOTICE HOW THE FIRST THING HERMIONE BRINGS UP ABOUT PREFECTS WHEN HARRY GETS QUIDDITCH CAPTAIN IS THE BATHROOMS? OK I'M GOING BANANA'S. BYE!!!
As for the movie, well, unfortunately, I think Rowling kind of screwed herself on that by not revealing more info to the directors from the start. So they were basically as clueless as the readers were about Snape. He was portrayed very one-dimensional in the first three books, so no one thought much about cutting out or shortening Snape's scenes in favor of the main story. Once that ball started rolling, it just continued into the more important books. ("Snape's Worse Memory" being a glaring example; that scene was horribly butchered and far too short; then two books later we later find out it is a crucial scene). By the time Deathly Hallows came out there wasn't much material left to work with for the big reveal. It would have been an extreme mood whiplash to compare an angry somewhat sadistic kid with the much calmer adult Snape that Rickman portrayed in the last couple of movies. For a more book faithful scene to have worked, the previous movies would have needed to show just how cruel and unfair adult Snape could be from the very beginning. They never did that, and just made him a snarky and somewhat short-tempered disciplinarian.
I still don't get why they couldn't digitally re color Lily/Harry's eyes.
Plus Snape got worse the older they got and Ron got better (people do lay onto Ron a bit much, but I think people just can't understand how or why he could be jealous of Harry since we see the books from Harry's point of view since it would look a bit different from Ron's perspective).
I mean look at it from this perspective about the big arguments:
Book 1: Halloween but then he came to save to her with Harry so that blew the whole thing over.
Book 2: No argument other than Ron trying to tell her that Lockhart was a phony, Ron was right.
Book 3: Hermione buys a cat that is chasing and trying to seemingly eat her best friends pet, is heavily stressed, and decides she'll just go behind her best friend's back instead of consulting them first. All in all, Hermione was being stupid that year and she really should have been chastised for it but the whole thing more or less blew over and Hermione realized she put on too much.
Book 4: The Yule Ball, totally Ron's fault and he deserves what he got. Still, they got over it quick enough thanks to more important things going on with Harry thus in fact showing Hermione that Ron learned from his bout of jealousy with Harry not to let it get in the way of his feelings.
Book 5: No argument and they in fact spent more time together than with Harry...though we don't get to see it.
Book 6: That fight was a myriad of things: 1) Ginny basically telling Ron to get an easy girlfriend, 2) Ginny basically reigniting Ron's jealousy of Krum by mentioning him kissing Hermione, 3) Ron being jealous and grumpy, 4) Hermione not being supportive, 5) Hermione talking like she doesn't believe in him to prove a point, 6) Lavender being extremely supportive of him that year so far (such as saying good luck to Ron when Hermione didn't). Overall the blame settled on Ron, Hermione and Ginny for what happened...but of course the brutality of war showed how childish and petty they were being so Ron and Hermione got over it.
Book 7: All three of the trio were cranky and mean in that tent (though Ron was the worst with lack of food but even Hermione is mentioned to be downright unpleasant as well), but Ron is effected worse by the locket due to all of his insecurities so he was more unpleasant. The fight was basically caused by being under the influence and he didn't come back immediately to them because he ended up captured in an enemy camp until Harry and Hermione left. Had he not, he probably would have returned a couple of minutes later.
Plus after facing the locket, Ron moved on from his problems thus leaving only the good man instead. I can say that had Harry, Ron and Hermione been through so much they probably wouldn't have gotten together though since most of Ron's good points probably wouldn't have been shown off as well. Ron and Hermione have what I like to call a "Fire forged love." As in, it's through their harships that they were able to see the person that they really were.
I think Lily and James had a degree of that too, while unfortunately, the more hardships Severus was put through the more it showed how horrible a person he was. Like when push came to shove, Snape would rather hide away with his Slytherin friends than step into save a bunch of innocent Muggleborns (I can see this happening simply because he would have let James and Harry die if Lily lived and he tried to write off dark magic on a girl that his friend did).
For some reason, I found this hilarious.