In fairness it wasn't the somewhat limited array of planets that interested me, I always imagined they were terraformed with a very limited menu of options, but I did enjoy the concept of Earth, the new kid on the block with loud guns and big ideas but not a lot of common sense or tact, the embodiment of a little knowledge is a dangerous thing, dipping our collective toe into a big galaxy full of things we didn't understand and quite often getting it bitten, but sometimes making a friend and learning something along the way. I loved it, and still do really. That's why I lost interest gradually as that dissipated and humans raced ahead and became conquerors and galactic powers through one Deux ex machina after another. I much preferred it when it was our team hopelessly out of their depth being fobbed off by the Nox.
I liked it for those reasons as well but I didn't mind how things changed. To me it felt like a natural progression. Kind of like watching our society transform into a Star Trek society. It would have been weird if 5 years in they hadn't been able to gain any new tech or make in headway in the battle with the bad guys.
Jason