Create a widget update action

I started to use wp super cache on multisite and I found out that it’s not clearing the cache when a widget is updated, added, deleted, moved, …
In sort when any widget area is updated. They wrote it is because there is no action to hook on.

My request is, can wp have that kind of action, because on multisite we can’t control which user is updating its widgets, so we can’t manually delete the cache that time.

And we know, that widgets are also using many queries and users not updates so often their widgets. So it would be great if it also could be cached and if an update made, than by hook on an action that cache could be cleared.

That would made the cache plugin more useable.

So in sort can wp get this kind of action in the near future?
Thanks!