I'm not trying to argue with your point that advancing to AF was our own decision. I'm just saying that the situation at present is not "have your cake or eat it," that would be someone wanting to use their goods and to keep them. In fact there's is no way to use your goods. So more like "Buy a cake or don't, but you can't eat it either way."
In a bigger picture though, the problem is that when the Obs, Atomium and Arc were put in the game, it was indicated that their goods bonuses would be useful if your guild was doing GvG. At the time I built those buildings, I had no way to know that continuing to age up would render them ineffective (though the arc of course remains valuable.)
Also, it was certainly very smart of you to leave a large number of unfinished techs so that you could continue to participate in events and quests without advancing. I wish that I had as well. But I don't think that was something we got any clear warning about ahead of time.