But again, it is all for selfish needs. That plan wasn't to look good for frigga and his father, it was to prove to them that he deserves to be king.
Absolutely, I'm not disagreeing with you there, he needs them to consider him "worthy" to be King, but he also desires their approval, and he desired their approval BEFORE he decided to do all that bad stuff so he can be king. Here's why...
"I never wanted the Throne, I only wanted to be your equal." That line is delivered when the jig is up, no need to lie anymore, and Loki is pretty enraged. So I think we'd both agree that it is truth, no? If so, that would indicate that up until that day, he was more interested in everyone (including Odin and Frigga) considering him Thor's equal, even if he wasn't king. The introduction of the truth of Loki's parentage is what causes him to snap, and take the throne for himself, so he can continue to hide, and even try to erase, the fact that he is not Asgardian but from a race of monsters. Selfish yes, definitely, but one can see why a character may snap, and want to do anything and everything to hide the truth, under such circumstances.
It is a combination of need of approval AND the selfish desire to be ruler AND a strong desire to hide this horrible truth about his parentage that drives him in the first film. MCU Loki is a bit more complicated than "Oh, he's just pure evil" there is other stuff going on in that bag of cats of a brain of his and it really surprises me when people dont see it when it is so clearly there. As The Other says, "Your ambition is little, and full of childish need." Children, as much as food, shelter, clothing and all that good stuff need their parents approval and love, something which
* in Loki's mind * he didnt have nearly enough of and was still struggling for 1000 years after he was picked up on Jotunheim.
I actually do agree with you that the "I could have done it for you father" has sort of a manipulative edge to it, with the way he delivers the line. But there is at least some truth to it, as evidenced by the Other's "childish need" line in Avengers, and "Is that what Agard need of it's king?" which you would probably say was more lying but I think was a genuine feeling that Thor was absolultey inappropriate to be king (which, up until then Thor was) and that Loki felt he could do a better job. But, basically I think the "I could have done it" line is manipulative, with a hint of truth, but is just more of a, "uh-oh, I'm in trouble, I better use the puppy dog eyes and tears, that gets him every time..." thing.
BTW, where was the bar scene in Avengers with the Other and the Chitauri where Loki is drunk and whining about how Odin never loved him as much as Thor, and how he should have been made King of Asgard? LOL

Would have been priceless. LOL
I want to see some real Loki abilities this time! Energy/magical blasts without a weapon. Mind control without a weapon. Teleporting. Spells. Shape shifting. I wanna see Loki have powers. Contrary to what the movie may have showed, Outside of Thor, Loki is far more powerful than any of the avengers. I will argue this part to the death, yeah Loki's arrogace got his butt beat by Hulk, but as far as I saw it, Loki is a character who under no circumstances should loose a fight to hulk, unless he wants to, or is just stupid. Outside of Mangog, Loki is one of the worst characters Hulk can fight. WAY too many advantages.
YES. YES. YES! He's a "master magician" where the hell has all the magic been?!
Idk. I mean, Odin will not be overwhelmed by Malekith, Algrim, and Dark Elves. Even if Algrim was Kurse. Odin isn't just more powerful than Thor. The scale in difference is even greater than Cap and Thor. In terms of power, I would say Thor is to Odin what daredevil would be to thor. Maybe even more. Like BT said, unless he his focusing on one thing, Odin can end them all. Easily. Which is curious to how this will be done. Cause Odin is incredibly powerful. Loki himself referred to him as "the most powerful being in the 9 realms"
Yes Loki did say that in Thor 1.
Yes, but let me point out how he fought the Frost Giants hand to hand and lost his eye to Laufey in the process. He doesn't seem to be nearly as powerful as he is in the comics, or he's been REALLY holding back for some reason yet to be revealed. Again they may have scaled back the power on some of these characters due to the old "if you show him/her being too powerful then nothing will ever be a believable challenge to him/her" problem.