why can't the other miners simply orphen these blocks?
Exactly how do you plan on "simply" detecting these blocks and why would somebody orphan them? How do you classify this as an attack; was the TX that F2Pool did to clear the spam also an attack?
somthing like if TX has >10,000 inputs it's no good?
why not!? I wouldn't mind if F2Pool's tiny blocks were orphaned by other miners. maybe he'll stop making these tiny blocks if they do punish him for it?
oh wait i read that wrong....
again, WHY NOT!? the TX in question WAS an attack, why include in the blockchain?
if you can't be sure if its spam or not ( <1$ TX with 1cent fee ) fine included in the block, but if you are sure it is spam ( >10K inputs ) why include it?