Replace knockout.js ?

A few years ago I wrote a handy web app which is now used by friends and strangers and there are occasional feature suggestions but no complaints about the functions it has. I built it with knockout.js and I'd guess I use more than half of the features it offers. My app is just over 1000 lines of html, js, and css. It's utterly client-side in operation.

When making the next revision, is there a reason to move to some other Model-View- system?