10-24 and the 35/1.4 make a pretty nice little combo. While the 18-55 is by all means a great lens, I found in my usage I was either shooting it at 18mm, about 80% of the time, or at close to 55mm about 15% of the time. I just really wasn't using much in the middle range, which might come down to just me, but it was essentially wide as I could get for landscapes, or for a people shot, I'd just zoom in as much as I could, and 55mm f4 doesn't always give ideal subject separation.
With the 10-24 you get some extra range on either side of the 18mm setting, and instead of shooting a portraity type shot at 55mm f4, you could shoot it at 35mm f1.4 and get that lovely rendering of the 35/1.4
Fuji doesn't really make any bad lenses, so its darn tough to choose as they all have their strong points, but at the same time, I've also gone on trips where I've taken the kitchen sink, essentially 10-24, 16, 23, 35, 56, and 55-200 or 50-140 etc and it just ends up being a pretty heavy bag. Sometimes its a question of not what lenses are best, but simply what lenses can fulfill a range of needs and allow some other ones to be left behind