We had a little discussion and came to conclusion that energy upgrades in their current state should go.
Why? Well, because lovering energy per operation 8x is impossible to balance. Balancing it would it either make it too costly at the beginning, or too cheap at the late-game. It's just a bad design, honestly. They are not that expensive and they lover the operation cost drastically.
Also, speed upgrades. They are better, but they don't increase operation cost. It would be a logical design because currently upgrades make the machine strictly better. Why not making it more... optional? Speed upgrades trade some efficiency for speed, and energy ones... I'd probably remove them at all. But making 8x speed boost and 8x energy efficiency is just not right. It makes the machine better than any other options. And factories already grant 3x, 5x or 7x free speed boost respectively.
Why? Well, because lovering energy per operation 8x is impossible to balance. Balancing it would it either make it too costly at the beginning, or too cheap at the late-game. It's just a bad design, honestly. They are not that expensive and they lover the operation cost drastically.
Also, speed upgrades. They are better, but they don't increase operation cost. It would be a logical design because currently upgrades make the machine strictly better. Why not making it more... optional? Speed upgrades trade some efficiency for speed, and energy ones... I'd probably remove them at all. But making 8x speed boost and 8x energy efficiency is just not right. It makes the machine better than any other options. And factories already grant 3x, 5x or 7x free speed boost respectively.