I have more alts than I have fingers (over two accounts before someone gets technical), and I want them all kept separate. Just because my main character has something doesn't mean all my other characters should. In fact I've greatly enjoyed getting things again a second time on other character.

Admittedly things like the events are a pain in the neck as it's a lot of running round doing the same thing over and over (and with the Halloween event I just didn't even bother for most of them), but I still like them kept separate.

The whole point of starting with a new character is just that, it's a new character. It shouldn't have any ties to your main character, it has its own story and its own achievements.