Yes, idealistically every characteristic or trait would be equally viable, but that is only... well, an ideal. For now, Maintenance doesn't quite seem to be attractive after threshold, while I would believe that almost all other characteristics can be useful with regards to a specific play style.
I will tell you after some play how I consider minerals compared to previous Versions, and how necessary it seems to raise mineral production. (But at a mere 60 points after threshold, it seems so tempting to raise mineral anyway, even if you won't lack this resource. Minerals are always in shortage in all the other games, so why not having a surplus of minerals to make a change?
)
And it goes without saying that, for now, I am the only one who gave my opinion about this subject. So the tweak cannot quite happen now, with only a single voice.