When I first started using Civil 3D back (2010), I found the Event Viewer was super confusing. Didn't really help. I'd like see some plain english feedback, and more user friendly resources to help with troubleshooting the output to assist people starting out. The Event Viewer can be (somewhat) useful when creating a Corridor, if you know how to interpret the output.
Furthermore, I'd like to see some customization options, such as the ability select / de-select the type of warnings. As a more experienced user now, I already know that surface profile was added to the profile view....and I know the surface was synchronized...and I don't care that duplicate points were ignored in my Surface (please just kill that one altogether). This type of feedback is just annoying. Thanks.