I totally agree with you that translation is the best way to get tokens from ICO projects. But not of all people can ability to translate the language. So, i think that Signature, facebook, and twitter are still worth to do.
Exactly the reason why translation has mOre to offer despite the low bounty allocation n comparison to signature.
This is due mainly to the reason that only a few are capable to engage in translation, and same can be said with article writing.
But then again only a few has it so, might probably stick with signature.
On another note, 1k a month is a woooww a decent find