Not really his call this time. His RTD-era scripts did tend to separate the Doctor and companion more frequently (Rose was with Jack for a good part...
Yes, and I think the body count is also higher (I haven't read the novel though). It's also an alternate movie ending, although it kind of looks more...
The first film (First Blood) is radically different to the sequels; Rambo only kills one man and it was more or less an accident; and possibly a few...
Efrosians (Species Hy'rell is) always kind of look sort of like Klingons but with fancier hair. It was a bit of an odd visual choice to have Kurtwood...