Make a separate client for mod management or allow people to disable the unneeded parts of the current one.
I don't watch streams via an app. If I want to watch streams I go to the site directly. Yet, I still must wade through a barely functional app that often doesn't work at all to manage my minecraft modpacks. The old Curse and FTB clients may not have been as pretty, but the most important thing has to be functionality, and the twitch client just DOES NOT WORK. It makes the process of setting up a new modpack infinitely worse with constant failures to load pages and having to wade through content I'm not interested in.