Its an ecchi harem, that you already know. I found the show to be highly enjoyable and kinda wacky from time to time, with lovable characters like Nymph and Ikaros and it was something new to me at the time since I've been trying to broaden my horizon and watch other shows other than mecha like Gundam.
The plot, while somewhat generic, had both a light and a dark tone to it. HLP had very funny moments and very serious moments.
I guess I just kinda loved it. Ikaros became one of my favorite characters as well.
I actually didn't
. I seriously know NOTHING about it. You're the first person I've heard really talk about it.
Ah well, I very highly doubt it's my sort of thing, especially since I despise harems and shun them as much as possible except for the Monogatari series.
Well, at the very least I'm glad you're enjoying something beyond Gundam shows. Good to expand your horizons and all that. There's a lot you should try if you haven't to really get a full look at what anime is capable of
Legend of the Galactic Heroes
Baccano
Puella Magi Madoka Magica
Shin Sekai Yori
Full Metal Alchemist: Brotherhood
Those are some incredibly solid ones imo. Maybe not your thing but I think they're good watches for really seeing what anime can do.