The thing we have to say first here is that Codex officially informs that:
This class’s access is marked as private. That means it is not
intended for use by plugin and theme developers as it is subject to
change without warning in any future WordPress release. If you would
still like to make use of the class, you should make a copy to use and
distribute with your own project, or else use it at your own risk.
So at first glance, it’s a bad idea to use it in your plugin. But…
It still is very handy class and it saves you a lot of coding. It also makes very easy to code UI that is consistent with other WP parts…
Another reason to use it is that a lot of plugins do.
So yes – I would go for it and use it in my plugin. But I’d have on my mind that it’s a little bit risky and maybe someday my plugin will stop working because of WP update – so I’ll have to test it against new versions or track changes in this class.