Using your table, my list looks like this:
1. Eco Lifestyle
2. Cottage Living
3. Island Living
4. Discover University
5. Cats+Dogs
6. Snowy Escape
7. Get together
8. GTW
9. City living
10. Seasons
11. Get Famous
Notes:
- DU really profits from CAS and the side features, bikes and robots, which I enjoy a lot. By its main feature alone this pack wouldn't be anywhere near the top.
- It pains me how much my erstwhile favorite, GT, has dropped, the more painfully the limitations of the club system surfaced and newer EPs stole the spotlight
Now for the corollary, there was a user who did several polls about our most played dlcs last year around this time, and they stated they wanted to do one like this every year. I really hope they do so, because I got crazy enough to actually keep a record of my most used EPs/GPs/SPs every month. (I tend to take lots of screenshots, so it wasn't hard to keep track).
So here is my list of most played EPs (gameplay features only) for comparison:
1. Eco Lifestyle
2. Discover University
3. GTW
4. Snowy Escape
5. City living
6. Cats & Dogs
7. Island Living
8. Cottage Living (added in september only)
9. Get together
10. Get famous
11. Seasons (added in november only)
GTW is that high because my story revolves around a bunch of infighting, backstabby police officers, so with one fifths of my sims being in the detective career, GTW is just very present in my game. It's the bread and butter gameplay so to say, but hardly my favorite gameplay "food".