@GodlyCash
I actually read the whole manga for the first time last month. So I think I can judge the whole series better than you do. I have no pink nostalgic-glasses on and the whole story is fresh in my mind.
Fact is, that the story is very straightforward:
Guts is born to some filthy woman, gets taken in by a mercenary who Guts sees as his father. But this father figure lets Guts get raped by one of his men, which starts Guts trauma and his issues with intimacy and trust. Guts kills his ’father‘ in a rage of emotion, and finds a new band of mercenarys. All of them remain pale, bland, boring characters, except for Griffith and Casca. But even those two get barely any characterization:
Griffith is a god-like person who wants to rule a kingdom. That‘s his goal which has priority over everything else. That’s it. Wow, how original. /s
The rest of his character is just „tell, not show“, which is the exact opposite of what a storyteller should do. There is no reason to believe, that Griffith is so great, except that the mangaka tells us we should believe that.
Casca is a random chick, who got saved by Griffith and her whole character revolves around being a fangirl of Griffith, without him ever even acknowledging her. That is, until she falls in love with Guts, which doesn‘t last long and she loses her memory and mind, because she got raped by Griffith. The rest of the story she is a useless idiot and rape-bait.
The whole Golden Age-Arc is a worse version of the manga Kingdom: there is no strategy in the battles at all, it‘s always just the same pattern: strong enemy gets introduced, Guts beats him, while Griffith has somehow crafted a genius tactic that wins the battle, though we never see his strategies in detail (like in Kingdom). The mangaka just tells us we should believe he is such a great general.
Yeah right.
Then comes the whole thing with the princess and Griffith’ attempt to overthrow the kingdom. That was actually my favorite arc in the manga. Finally some actual, clever storywriting. Didn‘t last long though, Griffith gets tortured, Guts & Co. rescue him, yada yada, aaaaand eclipse. Was decent enough, especially the artwork. Somewhere between we get Guts who leaves his friends, because.... reasons.
But ultimately the eclipse was disappointing. Simply because we never get a real sense of friendship between the guys in the band of hawks. It‘s all just too shallow and superficial. So the ultimate sacrifice in the eclipse falls flat.
The rest of the story we return to the present timeline, where Guts becomes a softie and gets friends, like in some damn Shounen. Throw in lots of fanservice (mindless gore and rape) and you have the whole story after the GA arc.
Then comes the Fantasia-Arc, which actually got me excited. Those chapters (I think, between 300-310 somewhere?) were great. All those fantastical monsters on the loose, awesome! .....unfortunately, the story so far is just too boring. No excitement, no adventure-feeling. And the character-arcs are not progressing at all.
I only still read because of the artwork and because I want to know how it ends (IF it ever ends).