I think it would be fair, thereupon shouldn't be unnecessary agreements on 'stealing' others experience. I remember when playing non-computer RP games as D&D even between a friendly crowd, when imagining a hunt in group, there was always the greedy one who used to kill or try to, every creature that loomed in front of us. But, as that was a game based on books, we could change the rules If the Dungeon Master agreed on the proposed subject, in order to improve the game and make it fair and, in extent, more fun, not that much for the ambitious, but for the rest. If that can occurs, it's easy to imagine how it will be in computer games.
In this case, the situation can be pretty similar, but with the controlling system over your followers, the only thing I find annoying is when you, trying to weak the prey, a critical hit happens and unwittingly, it explodes in a shapeless bloody mass.
I'm voting in favor of this suggestion, no matter If it has been posted before as it is or in a similar way, or not.