@onlyME I have made some small changes to make the slider widgets show the header as the ones from vertical and horizontal widgets.
Maybe you consider in adding it the the future version, maybe also with and On/Off option.
Here are the modifications:
In CSS file from featurecontent -> slider.css I have add this to remove spaces:
In Template file featuredcontent -> front -> embend -> showSlider I replaced from line 14...