a recent version of bandicam added the ability to be more specific with audio devices, which paves the way for a feature I requested I made a few years ago, was backed up by other users, but at the time was denied.
That feature is multiple audio streams. Currently we have the option to record two, which is great. However, when recording co-op or multiplayer let's plays it is often the case the skype/mumble/teamspeak audio needs cleaning up - remove background noise, adjust levels, or edit out profanity, for example.
With my current workflow it is not possible to separate skype and gameplay audio, but with a third audio stream specifically for multiplayer voice it would. This would be a godsend to those of us that are aiming for higher quality productions. Hell, I'll even promise to do a video promoting Bandisoft!!
previous feature request is here - http://www.bandisoft.com/forum/viewtopic.php?f=10&t=921