I have purchased all of the levels of all of the parts; I have nothing left to purchase. I have completed all of the puzzles. I have completed all of the collections, except for four parts of the tablets. There is really nothing left for me to do except to check in on the villagers every now and then, and assist them with continuing the population, and finding the last few collectibles of the tablets.
But I've notcied that one of the two TABLES in the hospital is still broken (a leg seems to be off and it's leaning off to the side).
(The previous reply was a typo for tables and tablets.)