With wordpress being such a large network, what is the right channel to provide official feedback for developers to work on in future updates?

We've done over 300 sites and have a list of over 129 items that could be implemented that simply improve the speed of the process by at least 457% per project. At the end of each fiscal year, that saves a lot of wages, saves time, opens up time for more valuable growth and more importantly it allows us to get more projects done improving our mastery with wordpress.