Whatever you call what you use in the templates.
I just thought it'd be a good idea to use something like
{if:online!=0}s{/if:online!=0}
Instead of {online_plural}
Mathmatical equations would make for some nifty features I'd think.
{if:members>9000}We have OVER 9000 members!{/if:members>9000}

But I guess those features could be made by using {stuff-like-this} inside JavaScript.

Just throwing the idea of math in the coding on there.

And something a little more asthetically pleasing than {}