I agree. One clear example is banning someone for participating on a community the mod doesn't like. Admins should learn from reddit's mistakes and limit what mods can and can't do.
Then you will be disappointed, because from my pov getting Karma is very easy ,I was talking about how the mods can take you at the verge of perma ban just by banning you from their subreddit,you can't even access to that site and you will be Permanently banned from both accounts. mods Removed what ever they wanted to which did not matched their opinion even if the comment was in right subreddit and right thread.