@LindorDoubleChoc
I don't like the picking apart of some posters who weren't thrilled with the ending or the series as a whole in some cases. People should feel free to post their opinions without facing scorn/condescension from others on the thread. I'm not going to out myself but I do know a bit about TV script writing so don't feel my opinion is any less valid than anyone else's.
@Emotionalsupportviper
I agree... I loved the end though would have liked (say) another 20 minutes to tidy up some odds and ends, but everyone has a right to like or dislike, and to offer their opinion on what would have improved it, added tension - whatever. Others may agree or disagree, but everyone's entitled to throw their hat into the ring without being made to feel uncomfortable.
This. ^ I am glad someone has said this. I wasn't going to say anything, but I'm also pissed off with the posters (not many thankfully,) who are sneering at the posters who saying they wanted, and needed the loose ends tying up (re; Faisal and Rob etc...) Or they would have preferred a couple of things towards the ends to have been a bit different.
Comments like 'not all of us need spoonfeeding what happened,' and 'oooh the writer must be quaking in her boots' (when someone suggested a different ending,) and 'the writer knows most of us are more intelligent than to need the loose ends tying up' are just rude. Basically, implying the posters saying they'd have liked a few loose ends tying up, or weren't overly happy with a few bits of the finale, Tommy setting fire to himself etc, aren't as intelligent as them. 
Utterly bizarre, and bloody rude frankly.
Intelligent or not intelligent, or somewhere in between, nothing changes the fact that what happened to Faisal and Rob was not revealed. As a number of posters have said now, another 15-20 minutes added on to tie up the few loose ends, would have been nice.
As you say @Emotionalsupportviper, people are entitled to say that, and have their own views and opinions, without posters acting like they're BETTER because they didn't need or want the explanations. Totally unnecessary to be rude to people who have different opinions. You have your views, I have mine. Yours aren't any more right than mine, and you're no better than me. OR any more intelligent!
Upshot is (as I said earlier,) I thought it was amazing, the whole series, and I pretty much enjoyed all of the Finale. I, (like a number of other posters,) would have just liked a couple of loose ends tying up (re; Faisal and Rob...)