So many problems with the udate up until today. here is what i noticed in my experience.
Just for the record i was a th10 with mainly th9 and half way th10 defenses. Heroes level25. I am one of the noobs that decided to upgrade to th11 for the GW and since I used to make my profit attacking th9 bases, now I cannot. Lets skip that part for now.

Problems based on my experience as a noob clasher.

1. How do noobs like me progress in the game now as premature th11? I make a very epxensive army to attack th10 and to be honest, basicly to attack the infernos. So OP in my opinion since I am not experienced enough I quess.
2. Lots of th10 and th11 bases below 1500 trophies. This would affect even the higher trophy leagues. But i quess let the trophy pushers be concerned about that. I show no sympathy cause after all they dont show sympathy to my case either.
3. My clan has stopped participating in clan war. Somehow there love of clan wars is lost in my clan. I hope this only happened to my clan and no other clans. Really loved clan war and used to play all the time. I myself even lost interest in clan wars since the new update and mostly since I made the mistake to turn th11. (my fault for sure, but what now? Just delete my hard working account and start all over again. Not a chance. I rather quit)
5. New defense? New witches? New th? I barely gave those any thought. I am so into my current playing issues I dont care about the new witches or the new defense. I totally placed them aside.
6. I hardly get any shield. Ever. But then again that is not so bad I guess cause no strong player attacks me. Still i get milked now and then. I dont mind that at the moment. But then again I dont have lots of resources and maybe that is why i dont get attacked. Nevertheless shield doesnt work for me.
7. PBT, i dont care. I dont play endless hours. So I never get kicked out.
8. I am getting tired of the game. It takes so much more effort than before. As a result I stopped buying gems. Before the update, upgrading your defenses was not too time consuming and as a paradox I loved that aspect of the game and I would gem in to boost my heroes or even finish an upgrade faster. I didnt mind, I loved it. Now the game is tiring. No fun, no gems for me. As simple as that.

There are so many more issues I experience myself but this post would become too long.