It would be a good idea to let people use capitalization in the in-game chat. It is a very easy suggestion and it can clarify terms like WTB, WTS, WTT, BCC, CC and so on. I know that moderators have the ability to use capitals in the public chats, so it's just a matter of changing a "false" to a "true" in the code. It is also just natural for people to type with upp- and lower case letters, it exists for a reason.
I can't remember who I had the conversation with (one of the mods, probably), but the argument was that they were afraid it would be a spamfest with all caps.
This does not hold true with other online games and doesn't even apply to the discord server many of us use.
It is just a weird thing and maybe after enabling the first days people will be surprised you can use capitals(and will maybe be annoying for a minute or two), but I guarantee that in the long run it does not harm the chat experience, I can think of other things that post a bigger threat to the wellbeing of the playerbase.
thank you for at least considering it, I think many long time players have accepted it as a normality, but it is still really strange for many, as if we are not trusted with a little bit of responsibility