I have found that with some practice I can correctly calibrate the bombsight and sometimes, not always, hit the target.  But when you throw a wind in there, say at 15,500 ft......there does not seem to be any way to correct for that and the bombs will be off, calibration or not.
I would say the difficulites of using the new bombsight, the way it is now, outweigh the gameplay issue of "fun" and therefore the whole thing seems like a detriment to the overall game.  
So you have 5 or 6 guys who finally figure out how to bomb 80% of the time?  Who cares?  3000 other guys are unhappy and not having fun like they used to.  That seems to be the case at this point.