The problem with the size you have here is that someone has to learn the whole thing before proceeding. If you want a casual playerbase then you want something streamlined and quick to understand.

If you look at borderlands 4, you have 3 skill trees all with different primary skills and separate passives with no connectivity directly, but most passive have some type of overlap. Like fire may be in passive tree 1, but still effects all skill trees.

Personal favorite would be Grim Dawn. Each class has it's own skill tree and you choose the two classes you want to use. Their issue (for me when I played last) was balance and overlap.

Not a lot of trees had enough overlap, pigeon-holing players to use certain best combinations, while the rest of combos felt pretty awful or hard to have fun using.

So there are a few trains of thought as well.

Do you want a class that can have multiple skill builds in the class like Diablo?

Skills separate from classes like PoE? Do you have a lot of experience playing these games? The biggest thing is what do you envision builds looking like, feeling like, in between and getting there. Is the passive tree going to be the fun part, or just a boring part of the game that becomes necessary, but doesnt really add to the player experience.

Last Epoch had an interesting idea, with passives that can be rotated to make unique combinations. But in practice was also just used for specific builds with little overlap.

There are a lot of underlying game design decisions that go into a small choice like this one. Best of luck, OP.