I ended up voting "Other" on this one. I like some things about it but I do think it could have more, especially for an expansion.
Yes, I think the world is great and as I explored the pack recently, it's definitely one I'll keep playing with. I agree that compared to earlier packs, it does seem to be lacking a bit.
I really think it should have included hotels or resorts. If anything, I like the livable world but I'd have been really impressed if there was also a smaller vacation world that may have just been a resort area. The pack would have felt bigger.
I actually do like the conservation career, I wouldn't have thought about it but it's different. I like that there is a different culture there; I actually think it is cool and I learned some things about the region that it's based on. The pre-mades? Meh, I'm incorporating some of them but I could take or leave them. I don't buy a pack for pre-mades though.
Gorgeous swimming, I could have my sims do that all day. I also got features that I asked for like the sun loungers. I like being able to park a sim outside and not have to wonder what they are up to.
I like the gorgeous houses and the quirky builds like the shipwreck. The lots all feel different from each other. I definitely think the world is replayable.
I think that the pack could use more gameplay. I don't really play with the mermaids because I'm not a supernatural player but yeah, I think the pack would have been better with more gameplay and if it incorporated vacations. As it is, it feels a little bit like corners were cut. Awesome world that is fun to explore though.
I've said before that I agree that Get Famous's world was way too small. I'm just now getting into the gameplay but the world is so small that it is hard to create an exclusive celebrity culture that just lives there. Sulani is beautiful and sure, I always want more beautiful beach lots, but hats off to the beauty of that world. I just think that IL was missing a "wow factor". I didn't feel like that with City Living or Get Together.
If there had been a beach resort and some kind of adventure, I probably would have been more wowed. I didn't play the TS3 version so I don't miss underwater scuba, but sure, more is more.