I mean, we all know what kinds of issues DF has even without graphics.
Well, truthfully, I get the impression that DF isn't really well optimized, and also it definitely has some really crazy fluid simulations going on, and presumably Spore, as a commercial product, would've been better optimized
What I don't get is that if it HAD ever really been intended to be SimEverything, like, why isn't there ever a unified gameplay system? You go from controlling one creature to a group of creature to a spaceship in every incarnation from what I can tell. If it were really unified, then ideally, you'd only really control one entity during any stage of gameplay or control multiple entities at every stage. Or a combination thereof, where you control an entire group of creatures but can single in on one and have some extra options with it. Sort of like MySim Mode in SC4 combined with your personal Merc in JA2.
Also, I imagine such a system would be easier to work with, since you have a basic paradigm to work with already and can work on developing the game around that system instead of just... grasping at straws.
Also getting the impression that current Civ mode is just "Kill all enemies or conver them or buy them," whereas in that old video, the City-related elements also meant you had to take care of your population? How does it work now, exactly?