When you read the reviews you see that there is no middle ground. You either love it or hate it. To me, it wasn't that radical, but I can certainly understand the feelings involved. Bored with recipe sci-fi series with the military crew on a ship doing justice for... justice's sake, one becomes to expect everything from any series that has a shred of originality.
Well, Earth 2 is not the answer. While it did have a nice starting point, a "crew" of civilians and interesting aliens, the script pretty much sucked, being either too smart, either too dumb. However, it sure beats the hell out of Lost and other mumbo jumbo series that now win award after award. I can almost feel sorry for the poor writers that would have to quickly end those series when the audience drops.
So yeah, Earth 2 was rather original and no, it wasn't very well written, but I'd rather watch a poorly written show with a good idea than a predictable and boring very well written one. Unluckily for me, I just love sci-fi, so I'll probably watch them all, good and bad.