I have completed all the puzzles and collections so what comes next?

I have 105 villagers and it won't let me have more and I can't build anything new either. Those villagers really need an outhouse!
I continue to train my villagers to Elder status even though I already have 50. I change their clothes to indicate they are elders and put "Elder" after their names.
and...You could always start a new village.
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Get the facts first, you can distort them later.