Never having read it, I've looked up some of the differences between it and the orginal, and I can see why some people don't like them, but as a standalone film, it Works with some fabulous performances.
Having said that, at a couple of points, you do need to not so much suspend disbelief as give it to some piggies with wings to take on a flight.
When you have something highly unlikely in your film, you have a few choices:
- Spend half the film dealing with it, and spoil the film - e.g. Inspector Gadget. In the cartoon series, he's just there, and we don't care where he came from or how he got his powers. The film spends half its time on an unbelievable creation story
- What do you expect, this is a 'so impossible, but true' film! The hero isn't mad, he really has been transported to another world.
- Ignore it - even the incredibly dire Thunderbirds film didn't bother to explain just how they created the Thunderbirds without anyone noticing
- Use it to advance the plot - Hitchcock did this all the time
- Make a joke of it - e.g. Halloween III, the villian is supposed to have stolen part of Stonehenge, and got it to California. Hmm, sounds difficult. What he says: "Oh, we had a time getting it here." Acknowledge the problem, don't give any unecessary details = we accept it
- Just claim to have done it - erm...
Here, we're expected to believe that someone on a one-man mission managed, without being detected, to re-open part of permanently closed tube system, and in particular, a tube line underneath what we've already had established is a seriously guarded Houses of Parliament.
I don't care that every Londoner knows the line shown goes nowhere near Parliament - LU don't let you film just anywhere - but come on...
Ditto the satirical TV programme. Ditto the mass courier delivery.