[Thy_Reaper]

Hmm... that shouldn't happen. Basically, researching an engine decreases the supply consumption per move, whereas moving to faster engines increases the supply per move cost. The way I set it up, without too much research, dropping a single engine to add supply storages should increase your range by 20-30 moves, so space and storage become vital.

This is especially true with the faster engines, since a Quantum Engine cosumes more than twice what an Ion engine does, when both are at max level.

I did some quick math based on my numbers, and noticed that at equal level, Putting 7 Quantum engines on a ship instead of 10 Ion engines would cost no more per move, give the same speed, and give the ship 30 more kT to use, so I have to rework the numbers a bit.

I'm thinking more like:
Ion = 4 s/m at TL1, 2 s/m at TL10
C-T = 6 s/m at TL1, 4 s/m at TL10
Jkt = 8 s/m at TL1, 6 s/m at TL10
Qnt = 10 s/m at TL1, 8 s/m at TL10

That should make all engines relatively balanced, and make it possible to outrun a fast fleet if you have a decent lead to begin with.

Btw, my goal with this design choice was to limit an empire's size to begin with, and to make supply-based weapondry have more of an impact on storages without increasing numbers.