Loki Thor Heimdall Mcu - Tumblr Posts
Okay, the throne legitimately fell to Loki in Thor 1, but the deleted scene also shows that as soon as the staff was in his hand, Loki began plotting a way to make it a more permanent position. But as they say, absolute power corrupts absolutely? Which is sad because he looked like a wounded puppy at the thought of taking the staff without permission, like "Wait, you mean me?" T_T Definitely a scene that shows the complexity of a baby Loki trapped by Odin's A+ parenting.
Obligatory puppy dog Loki:

I don’t know that Loki immediately began plotting to make it a more permanent position out of corruption, though. I think that he began plotting to do as much as he could while he had the position to clean up Thor’s mess with Jotunheim and make himself the hero who killed Laufey, slaughtered the Frost Giants (which Thor wanted to do) and saved Asgard. In my opinion, Loki’s intentions were never evil or corrupt; he acted out of a desperate need to prove his worth - to prove himself equal to Thor, or maybe even better than Thor.
It really makes me wonder how things might have turned out had Sif and the W3 not intervened - because, really, all Loki was trying to do was keep Thor away from Asgard until he had time to carry out his plan and come out the other side, victorious. I think eventually, he probably would have let Thor come back. But once the W4 went against Loki’s orders to bring Thor back, that’s when Loki got desperate and things fell apart.
I don’t think Loki ever thought he’d have the kingship permanently. If nothing else, Odin was going to wake up eventually, at which point he’d be king again. Loki just saw an opportunity to prove himself, while taking Thor down a few pegs, and pounced. Idk, it’s all very interesting because there’s just so much complexity going on between the characters in this movie and a million different ways things could have all turned out.