If someone wants to write "Swaaaag" or "KB FTW NOOBS" on their car... how does that affect you? It's not offensive, and just as possible in real life. If it's their car and they want to personalize it in a way that doesn't violate any rules, and will bring them increased enjoyment because of it, who are you to restrict them?
Besides, for anybody worried about bad paint jobs being the prevalent ones online: so long as the game has a Storefront-like feature, one that allows users to post their creations for download, the cream will rise to the top. I can
maybe recall on one hand the number of times I've seen offensive liveries in a year and a half of racing online in FM4. I've rarely seen terrible ones, either; chances are people put the time into making it a quality item if they're gonna be racing online, the same reason we all put a lot of consideration into what limited visual customization we already have in GT5. Sure, I've seen ones that aren't my preferred style, but the really bad stuff? I only ever see it if I head to the Storefront, and sort by Most Downloaded... then scroll to the very bottom
It could be avoided by a simple "Do Not Show User-Made Paintjobs" option that can be selected in the Options menu, for one. It could have a "file a complaint" feature much like LBP does when you encounter something offensive online, as well.
I didn't think there were people who actually supported the paint chip system...
Then the game will still be woefully behind the times in its genre, and given that this is the swansong for PS3, I really don't think GT players should have to wait potentially years longer for a feature that is pretty standard.
Count me firmly in the list of people who want a livery editor. I know that it not being in the game will severely limit how long GT6 will hold my interests, and it only ranks below two other things on my personal list of importance: an improved physics engine with a decent tire model, and the removal of ugly, last-gen assets.