I'm sorry, I can't promise when any of those will make it into the core. I believe it'll be in 1.1, but that is still a few months away, since we're not even in beta release yet.
Believe me, I share your frustration on it.
The hacks for the title/site name is relatively simple. It's floating around on the forum. I remember seeing it. If you want, I'll hunt for it and post it here for you.
The meta info handling on frontpage (and also on blog areas) is also, I believe, floating around somewhere. I can also find it (or try to work one out, it *is* needed).
The meta info for categories and section is problematic. It can't be solved without database changes (to my knowledge). I think that in the greater scheme of SEO, if all your other SEO techniques are solid, you won't be penalised too badly if you are short on content specific keywords/description for the sections/categories. Yes, it would be *much* better for them to be there, but they are just a part of it. In fact, some people will argue that meta keywords are useless (I disagree, but still, would agree that they aren't quite as important as we sometimes make them to be).
Sooooo, to make a long story short. If you want me to explain the couple hacks for title/site and the frontpage keywords, because you want to go ahead with your site nonetheless, I'll be glad to do so. I won't spend the time if you think you won't use it though. Do let me know.
