Like most Americans, I sometimes imagine what I would do if I "won the lottery" AKA came into a ton of money. I sometimes imagine I might start a revolving fund for Two Towers projects.
I'm not remotely an expert in financing of residential or commercial development but my understanding is it can be tough to find financing for mixed-use development of this sort that is part residential, part commercial.
So one way someone could potentially support the development of such projects is to either help developers find and access existing funding sources or establish a new funding source specifically for this type of project.
That's not really my area of expertise. It's outside my wheelhouse and I see no point in trying to google up a list of funding resources or something like that which might be a waste of my time and a waste of everyone else's time as well.
But I am confident in my assertion that the kind of housing that gets built is mostly what is readily funded or financed and since the end of World War II, in the US that mostly means single family detached homes in sprawling suburbs.
If you want to see more of THIS kind of development and aren't in the building business, helping with the financing piece would be a significant contribution to furthering such projects.