Not a huge deal, but would it be possible to not have the web interface shows “No Recent Backup” with a red warning for OSX and Linux clients as they do not do image backups anyway? The way it works now creates a bit of noise that you have to filter through to find out which machines actually have issues that need rectified and you cannot really tell at just a glance.
Also, persistence of OS and Client Version in the table would be nice, so you can see that information even if the machine is offline would be another plus.