We encourage all community members to become active on the wiki, and we are seeing some great new wiki use and development from several users and staff lately ... example (and see adjacent recent topics). The proposed 'Fc' template changes by Proton are 'good', and I would like to implement some standard color/markup uses for the site. site CSS is probably the best way, but templates like this example is another viable option, IMO. Whatever is most easily maintained is my pick.
Any new templates should be coded to include an "Experimental" warning at the top of the page. It might also be a good idea to include such an indicator in the transclusion itself or even restrict the use of such templates to wiki admins.