Feature request: allow exclusion of window classes

Currently, there is an option to "Automatically exclude from grouping all 'process.exe' windows". All well and good, but I'd like to be able to exclude not the process, but the specific window class (as seen in the menu "Add to group" -> "All ungrouped windows of class 'window_class'"). For example, I use a remote access solution that has one class for its system selection interface, while the actual remote access window uses another class. The menu is designed to be roughly 400px wide, which doesn't translate well to a maximised remote access window. However, the only way currently possible to automatically manage multiple windows is dependent on the process name, meaning I can't exclude this menu window specifically from grouping with the rest of the process windows.