Haha, oh dear. Many people had this problem
I meant to change the wording for this but that would have meant kissing goodbye to about 1,000 results on that section of the survey!
The way I meant it to come across was that if you thought the lack of access to lower tech units was problematic, then it was an
overpowered mechanic. But as it's basically a binary choice, the wording is confusing.
The way I interpreted the results on this was that any strong response probably equated to an unsatisfied response, whereas people who were neutral were happy with it. Kind of interesting when you look at them (on the bottom row here):
http://imgur.com/G4uFjIa
It seems there was quite a big turn out of people who weren't happy with auto-upgrade system in this game and I'm kind of with them on that one.