Can we hide version number in control panel for certain user groups? Usecase: the site I'm building has public registration, the publicly registered users have access to only their own specific entry in the back-end (which makes use of many complex fields, such as Matrix, which is why I'm not trying to put this form on the front-end for them to manage).

While everything else is hidden from them already, it'd be nice to hide the Craft version just to hinder any neer-do-wells from easy bug-hunting and hacking shenanigans.

It'd still be useful to have that info displayed for other admin groups though.

Is that possible?
You would need to write a plugin that hides it with Javascript. We don’t have any plans to make it customizable.