While the in-viewer notifications would be nice, some ability to send alerts outside of the viewer is incredibly useful. In my organization, I am our IT department and handle multiple sites. While I am behind my desk probably 70% of the time, I'm staring at RU only a fraction of that time and may not even have my computer up if I'm at another site say diagnosing a network issue. Missing windows when a computer gets turned on because I'm out at another site has been a substantial issue.
I figured at least the server emails on connection would require the setup of an RU server (which we already have), and while it's theoretically possible for the viewer to monitor for when a client becomes available on the default server I understand why you may be reluctant to implement such a feature as it would increase the amount of traffic that the default server would have to handle.
Some of the information in the host log is useful, but unfortunately it's stored on the host which makes it useless if the host isn't online which is often why I;ve wanted access to the information. To see some logging similar to this on the server would be a good start. It'd also be nice to be able to set clients and servers up so that client logs were automatically uploaded to the server when a connection was established but that's honestly probably less important.
It would be nice to have both A: Server-side alerts via email when a host connects for those of us who host our own RU servers, and B: the ability to have the viewer monitor for the availability of a client and pop up an alert when a host is available. Sometimes I'm trying to do deployments to several PCs at a time or need to monitor for availability for other reasons and being able to know when PCs I'm looking for are available would be a tremendous asset.
For various reasons, I've pretty commonly ran in to situations where I would've wanted to know what internet ID and IP addresses a computer had previously connected with. It would be nice to be able to log connection information from computers, even if it was just to a flat-file.