Nice ideas.
It might also lead us to other ways of beating the game.
After all, all players think it's all about fighting skills and coop.
But maybe there's more than that, like checking for the ecosystem?
That huge monster fish was hard to beat in that lake, but once outside it became easier to target and kill.
As of yet, bosses are always locked in their room, their own territory they fully master. What if there's another truth than this one?
Like soyu? Nobody thought it was possible or even thought of trying to create the flavor before Asuna decided she'd just master all cooking skills.
I do not say that cooking of fishing skills will help you beat the game, just it might give more material for thought and creativity.
At times, you get solutions for problems after thinkg about totally unrelated ideas. A reason for that could be it's good to lower stress levels and you have a clearer and fresher mind when you do easy/passionate things. In short take a full break.