People just type in 3 random words after 3 seconds of thinking.
How much time was invested in a suggestion if there are trivial spelling errors in it? Or it doesn't even make ANY sense. (Not in a creative way)
They suggest themes which aren't even themes. Forcing a genre or an art style or even an ENGINE on people is not really a theme. Lots of them are too specific, or too vague, or just repetitive. Or just a theme from the previous 5 jams.
(I could continue this whining for hours, but I won't. Just read the other posts about how garbage are most of the themes)
People don't really get how should they suggest a theme.
My suggestion is that there should be some restriction for theme suggesting.
Like the easiest: only one suggestion. This will force them to think about it a bit more and lowers the amount of "instant-no" themes.
But also there could be something like: submit one game in a jam. Or reach an overall rating of 2.5 with a game.
You get the idea.
But now I have to stop writing because I have to finish the slaughter.