I am really hoping to add service charges as an option for both retail and e-commerce. We operate a in a hybrid service/retail space, and would love for the guest facing display (or e-commerce checkout) to offer a percentage choice to add for our employees. Every workaround I've seen requires a dollar amount (a la gift wrapping) or not giving the customer the choice (just a negative percentage "discount").
I know this is something Shopify offers as part of its e-commerce (as seen here)
, and I would really like to see it in Lightspeed.