Just discovered this thread and want to make my contribution, too.
Requalified for SEN early in May, until Feb. 2023.
So far in 2019, a bit more than 130,000 status miles.
Status miles mainly generated via F travel to Australia and the United States, plus a long-haul C ticket to East Asia and some short haul in P and domestic in Y. All business-related travel plus a bit of leisure added on.
Coming up: some more travel in C on LH, including summer holiday in Canada with the whole family; and some non-*A flying to and in South America, which will help me collect enough miles to become Delta Platinum by status challenge.