I don’t think the game is unfair. It’s boss design is great. It’s the pacing that’s shit. Margit was an awesome fight.
I disagree. It is very intentionally unfair. Two against one bosses where one has long range attacks and one is melee? One shot kills? Losing all your level progress when you die and being unable to retrieve them? This breaks a lot of the common game formulas. It forces you to just "get good" and think about your gameplay differently. But that's exactly what I like about the game. When you're getting you ass handed to you you often can't just come back at a higher level, but need to actually take new strategies. You can for the main questline but outside that you need to "get good"
I’m not clear what you mean by outside the main quest line. The main quest line is the only noteworthy content. Everything can be done at a later level and probably will unless you’re using a guide to find everything in order. Malenia and mohg are outside the main quest line, technically I guess.
That's kind of my point though, because, at the beginning of the game, going straight to Stormveil Castle is not the optimal path. The optimal path is to go through East Limgrave and then Weeping Peninsula to get some levels and some gear. Guidance of Grace leads you away from that. Pretty unintuitive for the very first waypoints of the game.