They are almost perfect but with a small flaw: you cannot use them to parse conditional entered in scalar style properties.
Wouldn't be great if we could just create a custom scalar style properties and use it to enter custom conditional
Like for example <xen:if is="conditional here">
And have a second scalar with the closing if </xen:if>
Then i could enter in a template. @myfirstscalar. Some code in here @myclosingscalar
Unfortunately right now the template will not parse the conditional and render it as plain text
I also would like to see extra style properties: Text area, select menus, multiple tick boxes...