Love all of those too, some really great looking weapons in this game! I agree with what you said about some looking a bit too videogamey though, some of the supposed sharp bits of certain weapons can also be a bit too chunky at times in my opinion so it's like, that's not cutting anyone lol.My favorite weapons would probably be:
Redhorn Stonethresher - I think this is still my favorite looking weapon. It just looks so badass and it matches Itto so well. The red / gold trim and the horns on it look so good.
Verdict - I don't have it yet sadly but yeah easily one of the best looking weapons.
Splendor of Tranquil Waters - Love the scepter / sword combo with the flowing water around it. I think it's the weapon that best captures the personality/role of the character it's meant for.
A Thousand Floating Dreams - The genie in a bottle look is really nice. Matches Nahida's color scheme perfectly.
Crimson Moon's Semblance - I mean, I pulled it for the drip. It's a scythe, what more could you want?
Staff of Homa - Always liked the look of Homa. Matches Hu Tao really well.
Engulfing Lightning - I like when the sig weapons actually seem like weapons the character would really use. I feel like a good amount of the weapons come off as too video gamey but EL just looks like something Raiden would have had crafted for herself. Feels like this epic weapon of legend with a cool backstory.
This is what I'm doing too, I've got 50 fragiles and I think I'll use them on this domain until I have 10 left. Like to keep a few for building new units at least.I have 66 fragile resin. Seeing as Arle is my last main carry (unless I go for Clorinde which rn is like 30/70) until they release a new element, I think I can start using them on the bond domain. This is the scenario I kept them for.
So begins the grind.
I think the burning set could potentially be useful for an off field pyro dps in a burn melt team for Wriothesley, so I'll keep any acceptable pieces.
Good luck on your runs. I've got two potentially good artifacts for the Arle set so far but I'm kind of scared to level them, they both three lines and are crit/crit/Atk percent so I fear the disappointment of them both all rolling into the fourth line flat def!