Re: [development] Improving theme('username') with inspiration from Facebook

I don't know that all of the Facebook options are useful to us, and it seems like a couple might problematic for localization and internationalization. Still, it would be nice to have a some flexibility in styling user names in core. How about something like pluggable "theme-lets" or "micro-themes," so site owners can pick and choose which things they want special theming applied to, without getting a huge barrel full of unwanted extra code, sort of like enabling additional types in CCK? (Simply reading and interpreting the PHP code is a major bottleneck for any site without a PHP accelerator/code cache of some kind, especially with a large number of modules enabled. Thus, I favor finding ways to optionally include code.)