It wouldn't just be a great addition, in my opinion it is a must have!
In the business and enterprise area, where Telerik is usually active, it is essentially important to view PDF files. The question is, how do they handle the constraints of the small devices. And maybe more important, how can Telerik handle it's own constrained manpower resources?
Maybe it helps Telerik, if they check out PDFium an open source PDF Viewer: https://pdfium.googlesource.com/ it is used by Chrome and Chrome runs on iOS and Android. And it looks like PDFium has iOS and Android specific files: https://pdfium.googlesource.com/pdfium/+/master/core/src/fxge/