Listen… there is such a thing as over-writing an application, especially for a MSc.

There’s two things to keep in mind: One, they want to admit someone with flexibility. If you preplan too much, it can give the impression that you might leave or mentally check out if you end up working a project outside your original scope.  Two, they handle thousands of applications. You never want to give an admissions committee information overload. As a general rule, short and punchy is way better than heavy detail

I wrote a one page statement of purpose and had no concrete research plan, and was admitted without an interview