I've had a few lowbies that I let auto or deleted to persue another idea etc. I was wondering what the policy is on re rolling a character with the same name and/or role idea at a much later time, say 6 months later +? Keeping in mind none of these characters in question would have been well known or gained past level 20. Just curious.

There are certain things in place to prevent well known characters from having their name used again. If they aren't well known and the role hasn't been used, nobody is going to remember them anyway, so I wouldn't worry about it.