If you use SVG symbols within QGIS you can use params like these so you can adjust properties interactively in QGIS:
fill = param(fill) fill-opacity = param(fill-opacity) stroke = param(outline) stroke-width = param(outline-width) stroke-opacity = param(outline-opacity)
I would like to do the same with text within an SVG-image: Use (text-)placeholders in the SVG and fill in the actual text stored as QGIS variables within the print composer:
Is this already possible?