Support SVG 2 paint-order property
The SVG 2 paint-order property allows authors to control the order in which stroke, markers, and fill are painted for each shape, or for text. This can be used to create outlines that do not obscure fine details of shapes or text. It can also be used to create more subtle line markers that do not obscure the line itself.
The basic fill/stroke/markers options, as defined in the current draft of the specification, are already supported in Firefox, Chromium, and Webkit. They are therefore unlikely to change, although additional options may be added by future specifications.
The paint-order property is now under development in Edge.
Tobi Reif commented
Related: Firefox Nightly now supports paint-order for HTML text:
Related to this (if you like SVG, you can vote here as well):