As i have only 42000 miles i was interested in this offer, too, but i was offered only the F/C offer for 15.000 miles for 4 sectors. Would be ready to make a mileage run for the 10.000 miles Y offer, to keep my status. Called them today to get the same option - to no avail. So i justed mailed them as follows:

"Dear Sir, I was offered a special promotion for gold members, offering e.g. 15000 miles for 4 segments in F or C class. I should be interested to do another flight this year to maintain my gold status - but not in F/C, but in Y class. A collegue of mine, gold member as well but with only half my miles this year, obtained an offer for 10.000 miles in Y class - something i would be interested to use. My calls to Skywards today were disappointing - i was informed i could not be offered the same offer as my collegue. I am asking: does it make sense, to discriminate a gold member who has earned double the miles this year compared to someone who flew half the miles? What would be the result? I would not do another C flight. I would lose my gold status. And i would switch my loyalty next year to Ethihad or Quatar. Wouldn´t it then be better to allow me to benefit from the same offer as my collegue, to make another flight attractive for me, in order to keep my status? Looking very much forward to your reply, which i shall gladly share with others in the pertinent frequent flyer forums. Sincerely"

I shall share the reply with you - in case it comes.