answer:The most important for me has to be an ongoing story. I hate series that just have the same thing happening over and over in every episode until the season finale, in which it barely pivots the setting for the next season. The story has to follow and evolve to grip me. Like it can’t be some cops just going after different criminals every episode and just bagging them. They have to go after one badass criminal that keeps escaping them or fucking them over until the finale or something, where the cops gloriously pin his ass. I do like Law and Order though, don’t get me wrong, but that’s like nerd material where the story doesn’t matter much. One example is Dragon Ball Z. Sure all they do is roar and elbow each other for most of the episodes, but the series makes it a point to follow what’s going on. It respects its own mythos. How absurd it does at times matters not, at least they make an effort, and respect said mythos. So even if the same thing happens, there’s progress going on. What’s important to me is that as a series grows, what happened in the earlier one affects what’s going on in the current one. Significantly too, not just as a drive by mention. It’s got to play in the story. if all fails, just use time travel for fuck sakes I guess that’s why I lose interest in a lot of series quickly, unless it’s a sitcom, and there’s only one of those I ever stuck to. Gots to keep the story going man, don’t just use a concept and make it stall there.