Helvetica isn’t pervasive because the hipsters in Williamsburg plaster it over everything (actually, I’m guilty of that plastering too)- but because its form and metrics make it the most readable and usable font around. Today, public Urdu signs don’t seem to make use of a simplistic font. It’s too ‘elegant’; and is more reminiscent of poetry than public signage. We should worry less about how aesthetically pleasing it seems- and just get it pervasively implemented after lots of user testing. If you are a graphic designer with knowledge and experience of font design, and the art of fonts on the whole, please do get in touch.