Lots of shows mentioned here are unimpressive and predictable. Honestly this topic just reads to me like a typical top anime list, with no differentiation between coherent and incoherent shows. I cannot really get into which are trash or not without getting into something that could be seen as "bashing/flaming/trolling" though, I would think.
The Mahou Sensei Negima!? version is a quality anime, especially the first ~17 episodes. It does a lot of weird good things, although the humor falls flat sometimes by the virtue of them constantly trying for jokes and to do weird things. It has a very unique flair that almost no anime has. I assume you probably were unaware of it though, since I agree with you that the first Negima is very dull and incoherent attempt at adapting anything.
Negima never started out as a Love Hina clone. You could feel distinct similarities, but Love Hina was dumbing down the plot with harem gags ad nauseum, whereas Negima had a plot and good action prioritized over the harem aspects, although eventually character bloat starts weighing that down a lot.
