True that @Istvan Albert, the technicalities and the look of the webtool is quite impressive but I believe visualization these days gives a lot of opportunities to both data scientists and wet lab researcher to make a sense of the data. I am sure when the paper will come out it might be listing out the features in details outlining its scientific capabilities. I believe when you can compare lets say a few set of samples designed in pre customized version as the tool says and map it against the ICGC or TCGA data for visualization , definitely its worth giving a shot. I am not saying it will be very useful at the discovery point of view but yes it will be a powerful resource from the point of building connections or as I must say bring forward certain genes that might make sense when interrogated with large data sets. Also it is a one click tool for wet lab researchers which they always prefer . I give +1 for that .
But it is very evident in this field that visualizations do help us making new observations. Specially when we do not have very high number of samples or resources and need to make the most out of the project. I believe these tools, along with cbioportal really comes to great effectiveness.
very interesting tools, more details can be found here: https://www.biorxiv.org/content/10.1101/326470v5.full