Probably more space.
On a side note, I've always had the impression that Enterprise is not very well received among Star Trek fans and I'm a bit puzzled by it. I found it to be my favorite ST show I've seen.
PS. I never not take the chance to shill Babylon 5 when it come to Sci-fi, so if you've not seen the show. Definitely check it out. It is the best damn Sci-fi show I've seen.
PPS. Oberon, if you happen to be lurking; Watch the damn show already!