I dont think its needed - or even something that they should consider, since there is already an easy solution at hand: Talking with your static and/or finding a static that suits your needs and wishes (for example being more laid back and being fine with not jumping right into Savage on day one).

Avoiding story-spoilers usually isnt to difficult aswell - you dont have to do the MSQ on day one to avoid being spoiled, you can do it just fine the weekend after the patch as long as you dont start reading up on it and maybe turn off chats that have people talking about the story in them.

While I get your request on a personal level - I can feel stressed out by having many different things to unlock at the same time aswell, I dont like your suggestion because it pretty much "forces" everyone to play through this content in the order that you prefer by delaying the raid and "making" everyone go through MSQ first. They could just aswell delay the MSQ til friday with the reasoning that people usually have more time on the weekend to play through this slowly and without rush.
...but I dont think thats a good idea either - we're all adults, we should be able to solve a "problem" like this without the devs giving us even more of a schedudle.

What to do if you have little time is figure out whats more important to you, find a static that supports your wishes in that regard and in order to avoid spoilers simply avoid places where you might encounter them. I dont think that any of that is so difficult that someone cant manage and basically needs SE to make the entire playerbase play through this content within a set order. We're all old enough to make our own choices in that regard here.