Command-W should not remove a room from my sidebar

My personal plea: Remove command-w from the "Close Chat" menu item, at least when the current chat is a group chat. (Although I'd prefer it be removed in general.

I kind of get where this comes from. I'm "closing" the "chat" which is sort of the thing I have open. But after several months since this behavior came into being, I still do it daily when I didn't mean to. Sometimes I want to close the HipChat window. Sometimes I want to close an attachment overlay But I never want to "remove this room whose name I probably won't remember from my carefully curated list of rooms I care about so I have to go searching for it across our thousands of rooms while everyone wonders why I stopped responding"

More pedantically, the HIG recommends that Command-W close the frontmost window (https://developer.apple.com/library/content/documentation/UserExperience/Conceptual/OSXHIGuidelines/Keyboard.html) and it in my experience it is 100% universally used this way.

While I have you, I'd also love it if I could alphabetize my sidebar. Or alternately if the sidebar is really meant to be a transient list of chats I'm involved in right now then let me have a list of favorites or something. My company uses HipChat extensively across a large group of people and there are a handful of people (maybe 15) and rooms (maybe 10) that I care about regularly, including online/offline status and being notified of @here mentions.

Thanks!