Having a BILL is very good. It could be a partial bill. It is GREAT when the logo can look great on the LEFT of the name (because it fits in a top narrow webpage). But the MARK can also look great ABOVE the text on a bigger page. The logo should have enough character to stand alone.
We work on "Saving the US Dollar". A ship's "Life preserver" with the bill is helpful.
Look at the logo samples that I love. Maybe an abstract one is one I pick. But there are non-abstract ones that could work well. It can be great when there is an animal or some other personality sysmbol in the mark. Pink could be great
I'd recommend people try different colors. Right now, they appear pretty 2 tone. I'm open to a red color. I'm open to two colors in the name. That is great for separating "USD" from "Project". A "construction Crane" holding the US Dollar could also be good.
No coins. No multiple dollar bills. If a dollar bill is used, then only one. Most of the time it will be about US Dollar. But sometimes a cryptocurrency that could replace it.
Please don’t have “$” for “s” in USD.