It seems like you are just trying to reword the "Helper" tag. As
@zRinne said, having the tag would be like an announcement to all hackers to stop or be banned. It's hard enough on the staff sometimes when we run into a hacker that is more aware. It would be just as difficult for someone with the "hacker recorder" tag. Also, with any/all commands to "call" a hacker recorder... they would all be used and abused more often than not.
Another thing, current staff don't have the ability to join games that are already started (excluding FFA and Assassins). I don't think that they would make it possible for someone that isn't even staff to do it, unless they changed it for staff first.
This kind of tag is, all around, not needed as it's better to not inform hackers that there's someone in the game that could potentially report them and get them banned. If you would like to help the server more then feel free to apply for Helper at this
link. Or, you could continue to stay the rank you are and record/report to help the community.