I worked on a large codebase with this approach of 'feature for x'. It will not scale, IMHO. Far better to agree with someone wanting feature N is that if you

I worked on a large codebase with this approach of 'feature for x'. It will not scale, IMHO. Far better to agree with someone wanting feature N is that if you want it and it's a good fit for the majority of users, you pay for it - everyone gets it. It is a hard problem to tackle, especially given the sums involved in delivering sometimes trivial-effort features.