It was mentioned in a previous dev answer that some things, like music-boxes, may be re-purposed or removed if they don't fit into the new economy. Also, changes to crafting and other things have been hinted at down the road.
My question is simply this: If changes to game mechanics make it impossible to get a previously attainable badge, how would that previous achievement be handled?
Should it get removed, along with any numeric adjustment made on total badges and any mention of it in the encyclopedia? Should it remain, with an annotation letting people know it's no longer available? Moved to a new category other than achievement? Adjusted to something else that can still be obtained?
I'll be asleep during the Q&A today, so feel free to ask this question there if you like, glitches, or post your thoughts below!