Some people claim that this series is generic, and I only see that being the case for some parts of the manga (art style, certain jokes, sometimes the ecchi, etc.) However, I don't agree with it being a totally generic series. When it first came out, and still today, I find the series to be (not completely, but definitely somewhat) original.
The main character has the hopes and dreams of becoming an amazing hero, and when his chance finally comes to awaken his hidden powers, he ends up getting powers that make him look like a sex offender. Oh wonderful. His team starts off as weak as him, and they usually rely on their overpowered member for a number of the fights. Despite all these problems though, the manga's aware of them: The protagonist and his other weak comrades bluff a bunch of times for when they're pitted against a tough opponent. It may sound like something lame to do, but hey, it's impressive to have the characters think outside the box (especially when they're at a major disadvantage) beyond engaging in typical (generic) battles. I appreciate how the protagonist may be very weak, but he at least gives an effort to improve/develop his wacky power into something useful. That and how he manages to lead his rag-tag team to victory, all while trying to remain as positive as possible with the given situations.
I understand that the series is not for everyone as for what it has to offer. Still, just put into consideration that it's not as bad as some may say it is...