Allow more fonts like Calibri , Verdana to be used in Vector Tiles. It seems there are few limited fonts that are supported for creating labels in Vector tiles. Currently using Verdana and Calibri fonts makes the text look bolder on its own.
List of fonts supported are listed on page 25 of the pdf.
From a cartographic perspective these are limited options. If implemented this will give a wide range of selections for mapping and cartography department.