Streamlining cross posting is a good idea, as long as someone actually read the post and posts it with a purpose. On second thought, I think cross posting is simple enough, given that titles are usually auto completed.
I'm generally against automatic cross posting bots, as they usually post duplicates, bad articles (instead of a proper source). Additionally, they often flood communities with an amount of content they are too small to handle. I.e. a lack of users to vote on posts let's good articles drown in a flood of mediocre posts. This can kill communities as they feel even more empty than with fewer posts but more comments.
Ich mag den Mann nicht, aber es ist gut, dass er sich so deutlich äußert.