Benefits (How this will benefit the server and game as a whole): No more "one boom, gg" grenades that win rounds because a researcher decides to powertrip into madness.
Details (Description of how you think this would work, the benefits, etc): So far, i've seen three situations when the researcher just bombs the fuck out of the rasputin when the xenos board and just win the round for the marines, no matter how well/bad they did, no matter how many xenos there are, no matter how the round has been going up until that point. This is just like the old "death cages" from when we were allowed to build in the hangar and it should be banned, just like those. It's annoying to be on a roll, streamline marines as alien for two hours, getting close to reaping your rewards with that xeno major, then getting wiped out because a researcher decided to man up. This is unfun for marines as well, since why the hell would you work for a victory when you can just bait the xenos on the shuttle and bomb them?
Implementation (Optional, if you have an idea how to implement it): Simply add a rule that disallows the usage of research grenades on the Sulaco, or on any of the transport shuttles.

Pic related, a wild researcher decides to decimate the entire lower deck.