Lars, you sneaky bastard, putting that parameter into 4.6.2! Good job!
Now ... it's also easy to write a standard form template that flags mandatory fields, very useful in some contexts (I did this for Greenpeace)
Would it be worthwhile adding a form option to do this flagging that would then be honored by our form templates?
Malte - yes, a "skins" repository is a good idea. These good ideas just need a champion to volunteer to set up, document (we'd need a "how to write a skin" doc) etc to get implemented.