Paolo Vidali has a suggestion for merchants looking to add advanced features to their ecommerce sites: Be careful. Focus first on profitability, he says, and solve the basics of product returns, customer service, and free shipping. Paolo is a developer and marketer who launched Hidden Gears, an ecommerce agency, in 2014. It's now a Hawaii-based Shopify expert partner with a varied client base: wholesalers, physical retailers, and D2Cs. His second site, SuperBuilt, offers vetted developers fo...