I think the different formats matter a lot in how much risk studios may be willing to take. So far, these UK original series seem to run 6-8 episodes a season (at least the few I've seen). In comparison, US seasons are generally longer, sometimes much more so (22 episodes).
But if you want to call Hollywood generally unoriginal, I'm not going to disagree with that. :)
So what did you guy think of Simon's resolution? I'm glad the show at least pointed out the loop problem and I'm not sure why Simon wouldn't want to try and change so details to break the cycle. The actors won't be coming back, so we're stuck with this timeline, but I like to think of it in steps. He first saves Alisha from the gunmen, then comes back the next time and she dies to the ghost cult leader. So this next time, hopefully he'll try to save her from both... well, at least that's what the sappy romantic in me wants.