Well, I finally reached a goal I set for myself - I now have over one billion coins in my village. (That's a 1 followed by 9 zeroes; some countries define a billion as 1 followed by 12 zeroes. I don't think I will live long enough to get that many coins.) I doubt I am the first.
Now, what to do with it? Another expansion would be nice, but I don't think it's going to happen any time soon. And no, I'm not going to try to tip it away. I wouldn't have any fingers left.
Another goal I have set for myself is to get one of each kind of dino. At the rate they keep adding new dinos, I'm not sure there will be enough space in my village for enough dino habitats to hold them.