The usual quest with as little romance as possible because, there's mission at hand! Theres gotta be swords and magic or powers that don't lead into DBZ universe. The hero should be even with the villian... and just as cunning. No surprises off the wall or escalating threats, the threat should be known and it should be grand. The hero should have to fight against and lead armies against the villian who does not expect such a a power to rise against them.
today,we're gonna make a pefect storyline!heat up the pot(cooking pot that is)to 160 degrees farenheit.then throw in some inuyasha (hotties and all)a pinch of DBZ some suspense and mystery from case closed/detective conan its comin' along nicly!now put some magic from cardcaptors final fantasy and kingdom hearts.don't let it sit too long or the batch will not have all the hotties intended.let cook for about 15 minutes and presto chango!
Some romance is nice, but not needed. A story can be romantic, without any love stories in it. I like a storyline that has the main character as someone who isn't always likable. I like it when the antagonists aren't necessarily a true villain. I like it when there is more than one character who is the "bad guy." If it's anime, I like some fantasy in it. I like stories that don't just focus on one or two characters.
I actually think Juuni Kokki is a good example of a great storyline and series.