spectating matches
Not spectating. You connect to server using Rcz-irc client, You can only talk in text. Imagine Trem conslole (and only console) as a standalone app.
many months after the initial release
Perhaps it's not that hard. Perhaps it can be made in-house. Perhaps it can be outsourced for couple hundred bucks, in which case it's well worth it. Perhaps it is hard, but perhaps it's not and that's the point.
Plus, I'm not positive that anyone at AAA knows how to program mobile applications.
Again - perhaps they can, perhaps they can't, so don't assume. Perhaps they can outsource, perhaps outsourcing this will cost too much to be worth it anyway. Perhaps not and that's the point.
but I just don't think it's high enough on the To-Do list to really consider yet at this point.
I agree about To-Do list. And only about that.
Anyway, a quick google around the subject of "chat" reveals - get someone who knows programming a bit to ask about "how much a cross-platform messenger app will cost". Server already sends it anyway, so why nor use outside software to connect to that stream sent by server. Nothing fancy I assume (and hope I'm right it's not).