When you see a moment, you can easily take a screenie but not all the time screenie shows you relevant/enough information.
Just as the how a screenie can be hotkeyed, im suggesting the record function does the same.
Just hit the hot key, and it starts recording, when you stops the recorder, then and only then you should be able to name the file.
Things happens in seconds, and it needs to be hot keyed to prevent our memories from being missed.