Date A Live is just another series that takes the sci-fi theme and then mixes it with some new twists like the dating sim concept. It's a fun subject to embrace, but one that's hardly serious enough to listen to. The whole concept itself is weak, with rushed development and sequencing. The pacing of the series also seems to fall apart. The trick here is more than just a kiss. Rather, Date a Live just tries too hard and makes it almost too awesome for its presentation.
Date A Live II is pretty cool, but hang in there if you think it's slow. This season was mostly about introducing new characters and revealing new things about older characters. If you haven't seen DAL and think this program is weird, bad, confusing, etc., try DAL first.
Date A Live III for LA is a great step in the right direction, from the near aimless second season, and in line with the original first season. Sure the change in animation studio is a detriment, but if it's for the plot and all the tense stuff and backstories from character that NEEDED it, then Date A Live III is great in this regard.
Date A Live IV this season has some good points and some bad points that can definitely be corrected for the fifth season, but I enjoyed it nonetheless, despite still not returning to the quality of the first season, Date A Live is heading in a good direction after the mess last season.