I have recently been trying to integrate Coppermine gallery and phpBB into my wordpress site. One problem that I have run into is that they all name their functions similarly. This results in lots of php errors (http://wordpress.org/support/topic/57036).
My sugestion is that in future wordpress puts a wp_ in front of all the wordpress functions. This would save allot of effort on the part of people like me.
For example, I am suggesting that instead of using functions with generic names like "load_template()" or "make_clickable()" we should change these function names to "wp_load_template()" and "wp_make_clickable()"
Thanks for reading,