Why doesn't SG has a level filter or sorting system by levels ?

I know this has been brought up before/ several times, but I have never seen a discussion about it (I may be bad at searching)
But why does SG not have a filter or customized search where I can look at only giveaways that is of my level, or sort system that lists giveaways by decreasing level requirement ? This sounds like an elitist system, but it gives more returning values to people who does a lot of giveaways