I think it's an understandable move to have coil story modes being introduced. I do hope though that:

A - Lockouts won't be shared
B - Story modes aren't going to be the only alternative version of the content

It'd be nice if raids would get more options all together.

For example:

8m story mode
24m story mode
8m normal mode
24m normal mode
8m savage mode
24m savage mode

Separate lockouts, separate rewards. Just to give a little more flavor to the pickings of raids in this game.