Nothing, if you have the time, the design eye, and the patience for it. Most electrical business owners don’t. Beyond the time cost, there’s a quality ceiling with DIY customisation: fonts get substituted, spacing goes off, layouts break on different screen sizes, and content that looked fine in the template doesn’t translate to your actual business. Customers, builders, and insurers notice the difference between a document that was designed and one that was assembled. TradieVolt documents are built to hold up under that scrutiny.