Benchmark different implementations of functions against each other
Comparisons of utf_* fns vs. the PHP str* functions for edge behaviour (e.g. sub_str with positions outside of string)
Add further ways to "build" library to reduce number of includes necessary

- this is now partially mitigated by utf.php which works pretty well,

Leaving as is
Stuff to add
Where functions accept an integer character count as an argument, would be good to have byte index versions as well - can be useful in some instances where you're mingling with native str functions
Add the "romanize" stuff

Superceded by utf8 to ascii package
UTF-8 char to ordinal
Potential faster implementations re. Marek Gayer approach described here

http://www.sitepoint.com/blogs/2006/08/10/hot-php-utf-8-tips/
Implement Chris Smith's solution

Added to utils/position.php
http://sourceforge.net/tracker/index.php?func=detail&aid=1547780&group_id=142846&atid=753842