I rather like Yue Ying (Her lighting EX attack is so well deserved after the DLC wep was denied to her as a special wep in DW7), and grabbing and slamming people is just too fun. Joan of Arc also plesantly suprised me with her holy arrow storm EX. Giving her the Pink Outfit + Mahou Senshi-looking magic staff big star weapon is just awkwardly comical.
I wanna say Nene, but she feels so nerfed

I loved how her C3 seem to have this huge "activation" splash of damage on it in almost all old games, but that seems messed up now, and I don't know whyyyy...
Huang Zhong also really suprised me, he just feels great in this game. The end of his Musou is just one of the most oddly dynamic things in the game, too. "There's still life in me, yet!"
Wang Yi (Who I keep wanting to think is related to Wang Yuanji) brings a great, unexpectedly vicious style to the game, as well as one of my favorite music tracks. The Vertical range of her EX charge is crazy.
.... I miss the Magoichi Alt
Mago, Mitsuhide, Kojiro, Deng Ai, Ma Dai, Ujiyasu Hojo... man, have a lot of characters I like, that I still need to play...