They don't want Sentinel, because he doesn't work at all. Never bans cheaters, only innocent people. I agree with them. (https://www.cubecraft.net/threads/post-your-cubecraftrevolution-suggestions-here.211074/#post-1017308)
The Sentinels are a fictional variety of mutant-hunting robots appearing in American comic books published by Marvel Comics.
http://news.toyark.com/wp-content/uploads/sites/4/2011/07/31610-ComicCon-Sentinel-out_1309982929.jpg So this creature is following me all day....
^ I would like to imagine Sentinel being that guy in /v, stalking players to hit them with the ban hammer.