Every bid grouped by customer and job
Customers and projects keep the original bid, change orders and repeat work together, so you can see a customer's whole history at once.
Customers are saved the first time you bid them. After that, start typing their name on a new estimate and everything fills in.
Projects
A project is one job for a customer: a parking lot, a driveway, a building. Put the original bid and every change order in it. The customer page shows all of their projects and estimates together.