I think it would be useful if the administrator of the website could be select which updates needs to be performed. For example, if I have an octobercms update and a plugin update, it could be nice to perform only the cms update instead of doing also the plugin update (maybe it introduce some features that are buggy or not well tested).

Do you think that this feature would be useful?

It would be also nice if the build update could have a short changelog description, or at least tell if it's an important security update or not.

I think this will be useful. +1

+1