I'd love a coil story mode, but I don't see why it needs to be made easier.

The biggest obstacle to beating coil isn't difficulty, it's finding seven other people who know how the fights work. A big reason why that's so difficult is once people complete a stage of coil, then they're barred from helping anyone else. This means people who actually KNOW the fights, but aren't fortunate enough to have a static, get stuck in the endless loop of making parties only to find that two or three people have no clue what they're doing.

Story mode should be the same as normal mode, just without any rewards. Let people go in on story mode and help their friends learn the content and get clears. That's all anyone really needs.