What do you suggest as "baseline restrictions?" There are lots of little things people do that can aggravate people, but many of them aren't what I'd consider ban worthy -- not global bans, anyway. I'm hoping having a client side filter (enabled by default) would help cut down on a lot of the in-game flaming. Perhaps spam auto-ignore as well, and just a more prominent ignore feature (with drop-down context menus from the scoreboard).