My suggestion to stop such designs is that there should be no option to select a winner instantly. The client will have to select a maximum 3-6 designer as a finalist that's called final round or something like that and on final round submissions won't be hidden so that selected designer can see each other designs, If any designer using copied or generic design other designers will report that design.

Most important:- when the design is reported an email/notification should be delivered to that designer who uses copied design, which states you have 12 hours to withdraw your entries or you can challenge this with an authentic source to prove that you are not using any copied stuff and if withdraw within 12 hours you won't face any consequences. In this way, there would be no involvement of the design hill support team all the thing will automatically sorted out. In this way the original work will always be awarded and we'll see the real competition. The contest time should be reduced to 3 days for qualifying round then 2 days for final round. These are my suggestions what you guys think about this and any additional things that we can request design hill to add please comments below.