As a theme maker myself, I don`t see a problem in this option. There really are some crap themes out there. But a lot of people are missing the main potential source of this problem.
The big problem is the pricing of so called "good themes". Sure, there are people who just want to annoy everyone with his ugly theme and it`s done on purpose, but there are a lot of those people who can`t afford to pay hundreds of thousands of APB money for a theme. I sell mine for 60k, and a lot of people ask me to raise my price cause it feels to them like stealing, while there are similar themes in terms of quality and length that sells for 10 times more. Themes are too damn overrated.
Greedy theme makers, please, lower your prices, so more people can enjoy them and less people will be frustrated by the "ugly" themes. APB dollars are literally useless, as I`m swimming in them and have nowhere to spend it on.
This is not an attack, it`s just a suggestion.