These are the top ten issues that I run into the most often
- mapnik/mapnik#1428 - Merge Harfbuzz branch
- mapnik/mapnik#1484 - Smooth parameter for TextSymbolizer
- mapnik/mapnik#828 - All values should become expressions
- mapnik/mapnik#13 - Rendering text labels when labels length exceeds the length of the line
- mapnik/mapnik#1793 - Gaps rendered between overlapping polygons
- mapnik/mapnik#1152 - Try successively line and then point placements for TextSymbolizer
- mapnik/mapnik#1486 - MarkersSymbolizer doesn't like squiggly lines
- mapnik/mapnik#628 - Fit dashed lines to endpoints
- mapnik/mapnik#529 - Addition of different text effects like underline, outline may be strikethrought
- mapnik/mapnik#1030 - Rotation in marker symbolizer for linestrings
How about yours?
Support for Dymo-like label placement: https://github.com/migurski/Dymo
zoom level as variable of expression