They must really monitor their emails well. Got an answer (even if its only a blanket statement) back in 10 minutes when I wrote to GS :

Dear German Expat,

Thank you for taking the time to voice your sentiments on United's upgrade policy. I can assure you your comments have been forwarded to our Senior Management as they are interested in positive as well as negative feedback on the changes to take effect next year regarding upgrades.



Best regards