"Current 10 ban system is designed to prevent permabans on some champs"
if a champ is getting permabanned despite the playerbase being able to ban only 10 out of 134 (7.4%) champions out there, then it is a problem with the champion design, not the ban system design
rito fix pls
EDIT: since some were curious, adding in where rito explicitly tells us http://na.leagueoflegends.com/en/news/game-updates/competitive/10-bans-regular-play-coming-soon FAQ: "doesn't this mean some champions will be banned every game?" Answer: "Hopefully no; this was part of the design decision into allowing duplicate bans overall... We will be keeping an eye on the champs most likely to be permabanned across all tiers, and will make changes if necessary."

will join the near perma ban list
. Just because you find a champion to be annoying does not mean everyone finds them annoying. Annoying to someone does not meant that the champion requires changes.