Custom font is essential for non unicode launguages like hindi. At present most of books and documents available in hindi is non unicoded so if you convert them in kindle format and sent to your kindle over cloud you not get the option of custom font which is irritating. So you can choose one between two custom font or Cloud library.
Kfx format created using plugin have not much option compared to original books from amazon. In my case either orientation missing or allignment missing in kfx format.
