I actually made a formula the other week but no one seemed interested in it.. It concerncs exactly this... Basically it lowers the attack base of the larger player. So the smaller the guy they attack, the less effective there fleet is... It takes into account family and player networth....
this is the formula i came up with::
=100-(((100*((1-(DF/AF))*((AF-DF)/AF)))+((50*((1-(DP/AP))*((AP-DP)/AP))))
Where:
ap= attacking player nw
dp= defending player nw
AF= attacking family nw
DF= defending family nw
Its a beta stage formula though so might need updating somewhere but as an example... Currently in pw
Say a fam has 700k nw and attacks a fam with 600k nw.. And the attacking player has 150k nw, defending player 100k.. The resulting attack would attack with 92% attack force than usual.. So the units base attack is 8% lower... That is pretty small and so it shoud be as they are similar nw for family and close enough with player size...
now if you were to farm someone for example.. a fam with 2 mil nw, attacking a fam with 1.2 mil nw, and a player with 600k nw destroying a player with 300k nw.. the attack would now be only 71.5% of usual.. Thats almost 30% weaker.. So 30% fleet strength loss..
Now granted this doesnt stop farming altogether, but it will cause much greater losses to the attacking player..
Just to clarify, the formula takes family size into account more than it does player nw, since that varies quite easily... It also should be placed under some limits by IF.. So that the attacker doesnt actually gain a bonus when hitting a bigger player, it shouldnt work like that.. That is too much of an advantage, it shoud only work when getting attacked..
So for example IF ans > 100 then ans = 100 
- HUMI FOR MOD!!!