Will preface this by saying I "understand" your post / frustration, but cant agree on the facts. I doubt any true fan wants to accept mediocrity. Potter had 3 full seasons.
Ange is in round 3 of his second season, and lets not forget one small mitigating factor in that he took over when we lost Kane. We ended up 5th.
He inherited a mess.
It's not a cycle yet, and is far from it. It's barely one season and a couple of transfer windows. He has managed to get rid of so much deadwood, and has delivered some decent talent. The squad, bar Sonny is barely recognisable.
Our first 3 games, based on objective metrics should have us on 9 points. Shite happens. We lose our striker and have our backup injured as well. Let's see where we are in 8 weeks from now. The manager merry go round has achieved zip. Im enjoying us play at the minute. It's been a few years since I could say that.