LOL @ that Endgame art Raye!
This... actually helped to convince me a bit more that Loki might get Mjolnir somewhere in this. Because even though we saw him with it on that cover, and even though I've had my share of fannish thoughts on such a scenario for years, I'm also very mistrustful of cover art in general but especially when it's something like... an ex-villain trickster character getting that one thing he's always been after. Not that I think it couldn't happen, I'm hopeful that it does, but I know covers often like to show us something that's sort of true but with a twist that changes everything, you know? But here we see him in a sort of odd position, walking with a swagger/lean he's not normally shown to have, and yeah that looks like someone possibly carrying something heavy. HMMMMMMM!!!
Oh and yeah, those fannish Mjolnir thoughts did involve Loki becoming worthy but then willingly giving Mjolnir back to Thor bc 1) it'd be a lovely poetic moment where he acts in contrast to all those millenia of his Mjolnir-jealousy related bullshit, 2) frankly I'm not as interested in seeing Loki be a big blunt weapon wielding sort of character as I am in the idea of him just being able to lift Mjolnir, and, since Thor became unworthy: 3) I feel bad for Thor lol. Let him have his hammie back.
Really, Loki doesn't even really need a big magic weapon to be his most powerful. I mean, it would help, but his true strengths lie somewhere else. It'd make him stronger in a way that isn't like, magnifying what his strengths as a person already were. If that makes sense? On the one hand it'd give him perfectly balanced brain-brawn stats, but it's also his relative lack of brawn that made him develop his Loki-skillset so well, and I guess it feels less... poetic... to me to give him smth that takes away some of the motivation to pull some super Loki shit and let him hammer his way through, rather than show that the Loki method can work perfectly fine for the good side. Anyway this isn't a prediction, just a scenario I've had in my head for a long time.
Oh, since you've been talking about the taking responsibility thing! One thing I liked so much about AotG is that retrieving the Naglfar horn thing was essentially Loki cleaning up his mess. Yes, it was bc Nebula was an active threat with it, and there was the plan to use it in the WotR (possibly just a bonus, since they'd have it then anyway), but it did still have some old Loki nonsense coming around to ruin things, and Loki dealing with it. And then he tried to do the same thing when he saw he was the one who more or less created Malekith, before realising he couldn't. It's just nice. (as well as a convenient concept for Loki stories, if Marvel ever runs out of things for Loki to do lol. There's probably PLENTY of old Loki plans that could come back to bite him/everyone else in the ass at some point ) Actually Squirrel Girl did this too with the Ratatoskr thing, come to think of it haha