I don't mean to sound rude, but I don't necessarily think most people would have enjoyed a two season show, which included the most expensive pilot ever. They (the production team/companies) obviously wanted to recoup their costs and make a profit, so to play it out over 6 seasons and string along a loyal fanbase was probably the best way to do it. I'm quite sure they couldn't care less about the people that didn't enjoy the ending, and would rather satisfy the masses.
Most people I know who like the show (die hard and part-time fans alike) were interested in the show because of the plots and characters, instead of the science aspect. As such, most people I know were satisfied with the ending. I can completely sympathise with those who felt the ending was a cop out, and can understand why, but I think the producers (correctly, in my opinion) went for character closure instead of science/answer closure.
So, just to be clear, you'd have wanted a Lost with no Faraday, Desmond, Penny, etc?
A 2 series show was maybe a bit of an exaggeration. But they could certainly have got rid of a lot of things which imo were very badly scripted in. Arguing that a S6 show is right for the audience, because it allows the production team to recoup their money is not really the point. They can create a 6 series show, which works, rather than a 6 series show that feels like it's been cobbled together and padded out with a lot of completely irrelevant stuff.
If they were going for that ending all along, I'd have wanted a Lost with no Faraday, no Miles, no ginger bird, no Naomi. No introduction of folk in the Temple, which only created the illusion that you might get answers, only for them all to be killed off anyway. No back story to Jacob/MIB, as again this just created some very weak script writing that attempted to tell us about some of the mysteries (light/cork/monster), but failed horribly imo. I'd definitely have kept Desmond/Penny but would have done without a lot of the things they 'revealed' (badly) in S5 and S6.
Don't get me wrong - on the most part I loved Lost. But IMO they didn't end things well at all. In fact the last couple of seasons seem incredibly badly thought out compared to the others. Sure there were lots of good points as you went along, but all the bad points just turned out to be completely pointless and the show would (imo of course) have been better without them.
I don't dislike the ending because of how it ended. I dislike the ending because they introduced characters/subplots that were not necessary and used these (usually poor characters) to drag out the show. If the show had ended in a way which meant that these characters/subplots were explained/important, then I'd have enjoyed it a lot more.
But as I said before, I was just left feeling like the writers had strung us along towards the end.