If we get a travel pack, I hope the world can be used for vacation and living. We can have rentals in every world so I would much rather prefer a hotel pack that allows hotels in every world to benefit from the variety of worlds we already have. One of the main downsides from granite falls and selvadorada is that they don't allow sims to live there.
Tartosa already covers the Mediterranean vibe. With nectar locked behind horses, I see little reason for an additional Mediterranean world. But a French world based on other regions like the alps, Normandy or even Paris could be fun. Egypt would also be great.
Other ideas
- world inspired by African planes (thinking of Kenya) where sims can go on a safari
- a world based on Australia where the season is actually opposite of the rest of the worlds.
- a south American world where sims can actually live, which is unfortunately not possible in Selvadorada.