It definitely depends on you. I love SE, but I agree with LGR. It is very much a winter, Japanese inspired IL. Thing is, I love IL even if it is on the shallow side. IL and SE have two of my favorite worlds, so the content locked to them I will be able to access fairly easily. For me, especially, I wanted both an Asian and winter world so no matter how shallow all of it is, it is still straight off of my wishlist.
The real transcended gameplay is limited to the new career, traits and lifestyles, the latter of which I really enjoy though I feel there needs to be a lot more options. Festivals have alerts so you can attend them like the CL ones and the mountain excursion is an event you can plan.
Replayability depends very much on how much you use the world, lifestyles, new career, new skills, etc. The rental patch makes it easier to experience the worlds, but you still have to make the effort to incorporate it. Also, I dare say its bits and pieces of other packs make it more valuable if you have fewer packs. I will not have any problem using everything regularly, including a lot of the small details, so there are no regrets on my end. You, though? It just depends on how much the themes speak to you.
