There's a lot of great themes in the slaughter! I'd also argue that most people who've posted their outcomes so far are much too critical - how can you say only 3% of these themes are good!

My criteria are:

1. It could work for an abstract game (e.g. block puzzles)

2. It could work for a non-abstract game (e.g. platformer)

3. It will inspire a wide range of games, rather than most people having the same handful of ideas

4. I would actually want to play these games (so, "Annoying Controls" is right out)

With those criteria, around 30% of themes are green for me. I'd encourage others to be a little more generous so it's an actual vote, rather than just luck which themes get selected enough among a group of incredibly picky people.