You've got it absolutely right. It's the people that make the space, not the tech.
I currently serve on the board of directors for Quelab in Albuquerque. (We're a 501c3 org, so we have to have some formal structure.) Like you, I've been involved for about 5 years. It is ALL ABOUT the people. Get the right people in the door: they'll figure out what to do with what you've got, and they'll bring their own toys when they really get inspired.
My research for my Masters in Educational Leadership is exactly on how to create a great makerspace. I focus on community relations and social justice topics. I also blog, reflect on processes, and post occasional papers about it.
Let's get in touch.