What experience and what field.
I've never seen anything particularly noteworthy when it comes to good design decisions from them, especially in the Battlefield series.
Also I'm pretty sure one can safely assume only one person gets to play as a hero seeing how it would be pretty goofy if you had 40 Vaders running around. Chances are he'll be rewarded to the highest scoring player, so basically the guy already winning will have a way more powerful way of killing the enemy team. You seriously cannot tell me there's a way to "balance" a character like him.
You're making assumptions. Battlefield games are fun. That's all this game needs to be. Again we don't know how the hero system works. It honestly seems like you've completely written the game off and aren't interested.