There were a couple of issues with the Dystopian Legions game:
1. Scale - the figures are quite a bit bigger than anything else on the market, so you can't use them for anything else, or mix & match figures into the game. Being almost true scale, the ankles and wrists were delicate and very difficult to pin. The metal castings were also very brittle and some of the minis were incredibly difficult to put together (Covenant of Antarctica Robots were 7 or 8 pieces for each figure and could only be put together in a single pose - so could easily have been a 2 part casting)
2. Support - Spartan were great at coming up with an idea, then chasing after something else and forgetting all about the ranges they still had holes in. Lack of new releases was a major issue, with armies missing anything other than a couple of troop types. Some armies didn't even get released at all.
The rules were pretty sound from what I can remember and the concept of Victorian Dystopian conflicts was great. Linking Dystopian Wars with Legions could have been done better (I never played the land version of D Wars, but played the Naval Rules a lot).
When Spartan went bust lots of us lost our money in their Kickstarter and since then my Legions and Wars minis have languished in boxes.