Team of four (all very comfortable in Node.js, delivered several products in the past) + a customer. We will manage to build something. Need to figure out how m

Team of four (all very comfortable in Node.js, delivered several products in the past) + a customer. We will manage to build something. Need to figure out how much sense it makes to make that extra effort to be customizable, extendable, etc. That approach won't work if other Node.js devs are not interested in taking up the code and extending and customizing it in future.