How should you track customer wishes? You really shouldn’t do it at all. Listen, yes. But after that, forget what people told you. No, really!
There is no need for any databases, reports, feedback surveys, and so on. The requests that truly matter will keep coming up again and again. After a while, you simply won’t be able to forget them. Your clients will be your memory; they will continue to remind you. They will show you what things you really need to care about.
If there are requests that you can forget, it’s a sign that they aren’t very important. The truly important things won’t go away.