I was waiting anxiously for this update and I loved it! But I think that there are some problems.
People in my clan are fighting each other 24/7 now and the clan chat is full of replays and challenges. Now it is hard to read everything they're writing or asking there. I just see a lot of replays, like spams.
I think creating a new tab for friendly battle (it can be by "clan" or "global" tab side) will solve this problem. Since the person who wants to fight or just want to watch replays will need to click in this new tab. If the person doesn't want that, will use the old "clan" tab to chat normally, like in past.