Contracting

If you really need some changes made to Moodle you have a few options.

Moodle.com

One of the major sources of income for the Moodle project is contracting work done by core Moodle developers via Moodle.com. See http://moodle.com/development for details about getting a quote for work done. Work done this way has a very high chance of being included in Moodle core distribution, and will thus be maintained into the future. Not only that, but you are directly supporting the Moodle project in the best way!