Xbox live bans and setting up new profiles

Racing in lobbies particularly on a weekend I come across many people behaving badly either entering lobbies as individuals or teams with the sole purpose of spoiling it for as many people as possible or racing over aggressively without any consideration for others.

Often these profiles have very low gamerscores which would lead me to believe that they have been set up with the sole purpose of spoiling or as a result of receiving a ban on another profile.

If this is the case I would suggest the account holder taking some responsibility for this and additionally a block on the console entering a new profile in to Xbox Live whilst there is a ban in place on any profile registered to it - call it collective responsibility if you like