1) He can reasonably pick Class President or Childhood friend, though. Admittedly, in the case of the former she's his
old crush and in the case of the latter he's pretty much totally uninterested as far as I remember. What do you mean by "Reasonably", though?
2) I guess that's fair.
3) You mean the childhood friend? Her violence sorta abates as the series goes on as far as I remember. It was mostly played for comedy and tension early on. If by Ditz you mean Class President, yeah, her ditziness also has a very plausible reason. She's actually highly intelligent, it's just that with her personality...
4) It's the funnies manga I've ever read.
5) Addressed later.
6) I'd actually say a good deal of the humor comes form our protagonist actually being happy rather than unhappy, if I remember right.
7) Not really sure what to say here, it's been a while so I can't recall what you mean by this. xD
Something I think is nice is vamp girl's accent, it's sooooooooo cute.
9) Another funny thing is that the "Fanservice" stuff is sort of a meta plot element. Have you met the MC's granddaughter yet? If so, you'll know what I mean.
You know, for being my #1 favorite manga of all time, I find it
ridiculously hard to actually remember anyone's god damn names. I remember their CHARACTER perfectly well, but the names are just so forgettable.
In HCB the main character's cursed-ness is a huge plot point outside of the humor, to be fair. Also, he's not exactly "happy", but he does seem fairly content. Haven't even seen the other ones.
Please, let your raging hate-boner for FoZ die down a bit. We all know it's really bad, probably.