Am I the only one who's concerned...

... about the change to planet resources, that was announced in the latest dev diary?

Cold climate planets are going to have more Minerals than Warm or Wet ones.

Given how extremely important Mineral income is, in the early game phase, and in the first part of the mid game phase, since you spend almost all your time waiting for Minerals, so that you can build that which you've already decided on (long ago), why would anyone now decide to create and play a species that's not starting on a Cold planet?

Minerals > Energy > Food!

Even if it's just a small tendency, 8%'ish or so, it'll be enough to very strongly influence player choice-making, towards conformity.

Conformity-of-choice is indicative of absence of game balance. Of objectively bad game design. Good game design, by definition, causes variety of player choice to emerge.