Wow, the people in this thread must not have played the same Luminous Arc I'm playing. I can't comment on Hoshigami, since I don't own it, but Luminous has fun characters, lots of humor, it's well-written, the voice actors are over-the-top in some instances and appropriate in others...in this regard, they pretty much totally fit the characters so far. The game is fun, though I will say that it does have some technical flaws in that you can't rotate the battlefield. People always complain about the stylus control with this game, so I suppose that might be a con...if I had ever planned to use it in the first place, which I didn't. The graphics are nice, the character portraits in the story advancement sections are gorgeous, the sound is fantastic, and there's lots of customization to do (especially with the New Game+). Basically, there are a lot of little things they could have done to make the game play better, but for me at least, they're hardly deal-breakers. I like this game way more than Final Fantasy Tactics, which seems to always be the metric people use to measure other tactical RPGs. This game is far from dry, it has lots of opportunities for strategic gameplay or level-grinding, whichever you like, has little relationship-building segments after each battle, online vs. play against either Friends on your list or random opponents, and a New Game+ mode.
I guess it's similar to the reasons why people used to complain about Working Designs and their translations...some people just don't like a humorous slant in games. The technical flaws? I can see why people would gripe about that stuff...but griping about the writing or the story or the voices in this game just doesn't really seem right to me.