On to collection and their purpose; population gains.
Thought 90 is the population cap to get this you must finish all the collection;
butterflies, shells, pebbles and beetles. For each collection finished your population
increases by 5 more people; this will in turn be 20 extra population added to the 70 the
huts will provide thus equaling 90. I still prefer no more than 70 at the most and for
most of the games I've completed stay anywhere from just 50 to 70. This is just a personal
preference however. Racing all over the map attempting to keep everyone working and happy
can be a complete drag. Lol! I keep my village at a minimum to retain control and still
have fun. And there are many times I was unable to complete even 1 collection which made
my population cap 70 which did not limit my enjoyment of my village.
I tend to play long after I've completed all the puzzles just for the fun of caring for
new toons. They pick up different likes and dislikes from their parents which translate
into the skills they will be best at. I'll get into more detail on that at another time.