Different new features are far more important to some forums than your requirements - whereas yours are more important than theirs.
Maybe you have no use for multiple languages, but other sites do.
Others have benefited from full post tracking or the ability to have bans of varying lengths, or maybe the ability to auto-delete move pointers for posts after a set period of time etc.
Don't get me wrong your requests are all valid and I am looking forward to some of your requests being added - but don't forget that 7 was a complete rewrite from 6.x and so there has had to be further modifications to the code behind the scenes to enable features to be added in the next version and beyond.
As for a spellchecker then FireFox 2 is your answer
