How to extend to other plotly.express chart types? There are dozens!

[fubar2]

According to https://plotly.com/python/plotly-express/

Plotly Express currently includes the following functions:

    Basics: [scatter](https://plotly.com/python/line-and-scatter/), [line](https://plotly.com/python/line-charts/), [area](https://plotly.com/python/filled-area-plots/), [bar](https://plotly.com/python/bar-charts/), [funnel](https://plotly.com/python/funnel-charts/), [timeline](https://plotly.com/python/gantt/)
    Part-of-Whole: [pie](https://plotly.com/python/pie-charts/), [sunburst](https://plotly.com/python/sunburst-charts/), [treemap](https://plotly.com/python/treemaps/), [icicle](https://plotly.com/python/icicle-charts/), [funnel_area](https://plotly.com/python/funnel-charts/)
    1D Distributions: [histogram](https://plotly.com/python/histograms/), [box](https://plotly.com/python/box-plots/), [violin](https://plotly.com/python/violin/), [strip](https://plotly.com/python/strip-charts/), [ecdf](https://plotly.com/python/ecdf-plots/)
    2D Distributions: [density_heatmap](https://plotly.com/python/2D-Histogram/), [density_contour](https://plotly.com/python/2d-histogram-contour/)
    Matrix or Image Input: [imshow](https://plotly.com/python/imshow/)
    3-Dimensional: [scatter_3d](https://plotly.com/python/3d-scatter-plots/), [line_3d](https://plotly.com/python/3d-line-plots/)
    Multidimensional: [scatter_matrix](https://plotly.com/python/splom/), [parallel_coordinates](https://plotly.com/python/parallel-coordinates-plot/), [parallel_categories](https://plotly.com/python/parallel-categories-diagram/)
    Tile Maps: [scatter_mapbox](https://plotly.com/python/scattermapbox/), [line_mapbox](https://plotly.com/python/lines-on-mapbox/), [choropleth_mapbox](https://plotly.com/python/mapbox-county-choropleth/), [density_mapbox](https://plotly.com/python/mapbox-density-heatmaps/)
    Outline Maps: [scatter_geo](https://plotly.com/python/scatter-plots-on-maps/), [line_geo](https://plotly.com/python/lines-on-maps/), [choropleth](https://plotly.com/python/choropleth-maps/)
    Polar Charts: [scatter_polar](https://plotly.com/python/polar-chart/), [line_polar](https://plotly.com/python/polar-chart/), [bar_polar](https://plotly.com/python/wind-rose-charts/)
    Ternary Charts: [scatter_ternary](https://plotly.com/python/ternary-plots/), [line_ternary](https://plotly.com/python/ternary-plots/)

For example, it looks easy to include 2d lines and 3d scatters/lines by adding an optional z axis and some selects.
How should all this functionality be included for users? Most of it is specialised so probably just need to wait for demand. OTOH, the density heat and contour maps could be very popular?
Advice from those who actually deal with end users would be greatly appreciated :)