attackers being resourcers as well is an outdated strategy. The problem with that is you need to have all your attackers being active and aiding out constantly. So instead of having 1 or 2 active pure resourcers your gonna rely on having 10 somewhat smaller resourcers?
A good strategy is never outdated!
small attackler got half the pcount of big in that strat and the fam work in teams with half the income wich will automaticly balance income and upceep so we wont have a problem.
The attackers in a team need to make 2 times the food the bankers need.
Most will be done by the bigger attackers but some also by small once.
This also means your attackers are gonna need more planets than neccesary in order to keep up with the iron needed to build bankers. The results of which are increased morale costs and less potential targets due to size and NW.
Nope instead I boost infra for attaclkers faster then bank strat thoes.
Wrong on that point to as I will choose attackers to get 2 guys in range of most of the players in a target fam they will reach most members and fight biggest possible foe first before taking on smaller guys.
If your going to have 2 pop bankers you really dont want your food sources coming from 10 different empires. You need a constant and steady supply of food.
The small and big attacker will produce inuf between them to get the needed food np.
the other problem you will have is keeping 10 attackers supplied with a decent amount of fleet. Keeping 10 attackers active and interested for the entire round will be a tall order. If a few of them go inactive on you thats a major dent in your resource production since they are resourcers too.
If fleets are to small cos to low eco its time for a opwar after wich we will have big inuf fleets all of a sudden ! 
If I let them grow all round and get decent support with fleets NO attacker will go inactive cos the game is to fun to miss out on. And should one still go inactive i would kill him at highest possible speed.
i wish you luck with this strategy. Im pretty sure its gonna fail though.
I have used it and I have never seen a fam work better then it did that round.