Im glad the amiibo quiz was a bit of fun. It wasn't made super clear during the show, but all of the questions were fun facts from the Amiibook.
It was hard to choose ones that could be turned into a quiz.

I thought it was a fun segment.

How'd you mail it in so only Jon saw the answers?  I've been wanting to email them a quiz of "What games are on the back of the console box?" (ex. What screenshots are on the back of the launch GBA?) but haven't gotten it together yet.

I attached a text file to the email with just the answers

I loved that Amiibo Trivia game. I will proudly say I managed to get all of them correct, although that last question stumped me and I had to think on it for awhile. Great inclusion!

As far as bad endings go, I really struggled with thinking of something. A lot of my favorite games, especially first party Nintendo games, have endings that are the least enjoyable part of the game (the third floor Boo hunt in Luigi's Mansion, Corona Mountain in Super Mario Sunshine, the backtracking of Chapter 7 in Paper Mario: The Thousand-Year Door, etc.) but none of them ruined the game for me. The Zelda series has several games where the last act of the game isn't as enjoyable for me (the Triforce hunt in The Wind Waker, the Ganon fight in Breath of the Wild, facing the Imprisoned and collecting Tadtones in Skyward Sword, etc.). If I had to pick one game with an ending I didn't really care for that kinda stepped a bit harder on my enjoyment of the whole package, I guess I'd go with Professor Layton and the Azran Legacy. I won't spoil anything, but I think the conclusion was not quite what my expectations were hoping for, and narratively, it spoils just a bit of the mystique of the prequel series' arc.