Not unless you are doing KDR on a race by race basis. If not, this would make people play specific races even more. I'd rather see :
better auto balance > a reset (with hopefully a future prestige system) > overleveling > new races.
A system that is defaulted to that is turned off by 66% of votes that organizes teams into some semblance of balance. You could use KDR for this. Don't have people with high KDR on the same team. Spread the skill evenly across teams. Make it auto balance every 3 rounds in case new people join. make it illegal for people to try to game this system by going spec and forcing a normal auto balance then joining the other team.
I don't feel that making someone brand new who has no levels have essentially 1000 hp between your idea and the current newbie bonus thing would make the game more fun.
What: my life skills use meat
“Let us be thankful for the fools. But for them the rest of us could not succeed. ” -Mark Twain