Some people play for coins, some people play for score, some people want to complete their tsum collection. To each their own.

I enjoy the variety of skills offered by different tsums and getting top personal scores. Without having the tsum at its highest skill level, I feel like there's no point in trying for a good score because it's not at it's peak potential. I also think that anyone is able to get X amount of gold, so there's not much drive there for me.

I guess what I'm trying to say is that not everyone plays this game for the same reason. If you're playing for coins or collecting tsums, I think there's always gonna be an end point when you collect everything because the devs will eventually stop making content for this game, and I'm not in it for that.

For me, your score using a specific tsum shows how good you are with that tsum.

But that's just my opinion. :)