It will be interesting if one could have one's webapp also be able to accept browser extensions as add-ons to functionality to the app - such that users can cre

It will be interesting if one could have one's webapp also be able to accept browser extensions as add-ons to functionality to the app - such that users can create their own 'packages' for your webapp just as anyone would do browser extensions? or does this sound stupid (obviously the biggest risk here is malevolent extensions (dont make medical apps out of this :-)