It could have ended better...and the writers could..or should have at least given the Hoppers some sort of story. Daisuke well his later eps were the best ones for him, even though he wasn't important to the plot.
Tsurugi's arch was alright for comedic purposes, but his final eps were great too, it would have been better if he ended up being the final boss Kagami had to face, meanwhile Tendou and and D Kabuto faced off against Mishima and the head of Zect.
Possibly make the hoppers be the ones to take out the Casai(sp?) worms that remained but they die against the most powerful. Todoroko-san I think should have be Zabee in the end to aid Kagami in getting away with Misaki driving in to give him his bike.
But overal...I'd give it a 8/10. Cause things should have been explained in the end.