In all of the reports one that might not be entirely necessary but could be nice, would be, "Customer(s) by Spend"

meaning, compile a list showing all of our customers and in short dollar figures the associated revenue, expense and maybe even ticket/invoice count or when their account was created.

it might not be the most important report, but, it could help MSP's or even residential break-fix guys assess who their best clients are by margin or by how high or low maintenance they are. Could help visualize in a way some of the clients who just might need to be let go based on value they bring versus attention required.