I've ran the first three stages in Dirt Rally 2.0. It's pretty hard to tell how it stacks up to the original at this point, but my gut check is that it's going to be a lot better. Since I'm in the dinky little starter car it's a bit difficult to compare to some of the beasts that I'm more used to driving, but a few early observations: the visuals are a few notches better with crisper, more colorful scenery and vastly improved headlights for night driving. The track surface has a degradable technology so that it reflects previous traffic in the form of mild ruts which is kind of interesting, and the feedback and sound are stellar. It's easier to visually interpret the track ahead because of more dynamic shading/shadows/lighting and the copilot seems a bit more accurate than last time, which is critical for breakneck driving speeds. It'll take a few days to reach a conclusion, but I'm thrilled with what I've seen so far.
The customization and crew options are there in a very mild sense, but nothing like what the OP was asking for. That's ok by me since I'm far and away more interested in the driving experience than the garage experience.