Ask HN: CraigsList alternative idea?

Hi everyone. I was thinking about the idea of a CraigsList alternative?

I know it's all about execution, but is this market a bit overpopulated(in terms of solutions)? After all, the only thing wrong with CraigsList is the design?(sorry, I might be wrong, CraigsList doesn't support my country-Bosnia and Herzegovina)

I'd really like to hear your opinion on this, I'm interested in creating something out of it! :)