Maybe for those who want to help out - on the bio page there (in addition to interests, etc) could be an option to list ways in which you would like to help... like with style issues, graphics, html, technical, .bml, etc. Then everyone would have out there what they could help with, and those working on projects would easily have access to a list of people who have offered up their support in that field.
The only real issues I would see with this are those people who really would NOT help or who could not truly help with those skills that they listed - that could get frustrating. Still, people would feel like their offers were there... Their skills listed... After awhile Brad, Mark, Evan, etc would all know who will truly be of help to them and who would not be able to help with other things... but when those regular people assisting them were not available they would have easy access to others who might be able to take over a piece of a project.
For example, when petfish offered to help that offer was almost lost somehow in the comments here... Not everyone who wants to help realizes that this is here... That they can be granted access to make posts. And certainly not everyone out there who would volunteer their skils even knows that they can. Not that we need everyone on the journals posting "Html" as their volunteer skill (like I would do) but... for those talented people hiding out there in LJ land some way of sharing that they are ready, willing, and able it would be nice.