My Idea:
That each race can have a hero or sorts, for example i am goa'uld, perhaps we could use the hero Nirrti for a 5% covert bonus, or you could use the hero Anubis for maybe a 5% defence bonus etc..
You could have 4 Heros for each race one for each of the different stats, attack, defence, covert and income
You could change your hero once a calender month for you players who just can't decide, or maybe a limit of 3 like race changes after an initial test period, that players could tyr all of them out and keep the one they like best.
Those are my 2 cents.
Feel free to tweak and comment
Edit: Taking Wolf's suggestions

I have played other games where u choose a similar type of thing and it works a treat, it adds a real flexibility to the game and makes it very enjoyable!

