I went to fiverr looking for a new logo design. After wasting tons of time filtering a lot of offerings I chose three designers and gave them the job. One of them despite having an impressive portfolio really wow stunning original logo designs, she delivered a very amateur design so the portfolio logos weren't her work... obviously. Second designer the same story, fake and stolen design portfolios.
How could fiverr be done smarter? When I post a job, I want to be able to filter gigs by the number of verified jobs done and the feedback ratings. I can't do that and it shows me a designer with #1 rating just because she/he got two jobs and got highest feedback probably were her/his friends. If I am willing to pay for quality and say I place a budget of $400 for a design I want to keep all the fake, junk and scammers away and not waste my time.
Beware of Arbitrage: arbitrage are people that have a luxury level portfolio and they look authentic designers but at the end they are subcontracting other designers and getting a margin. Yes they are making money without doing anything... fiverr can detect this easily by automatically analyzing the reviews tree because the arbitrage folks give reviews to the real providers too.
You can get what you need eventually after spending a lot of time. If your budget is higher you will get more junk to filter out and fiverr doesn't help.