Major! Chat is silently dropping specific strings regardless of sender or channel!

[Alhanelem]

I'm not sure if you understand how this impacts role-playing.

It affects role playing and ordinary chat the same way. It doesn't discriminate against role-players. You don't even have to act out of character... you can just be like "Can you hear me now?" Good!" like those cell phone ads from years ago.

I've observed that RPers feel the need to flag their chat as RP chat by putting weird symbols around it (I don't like it because it makes me feel like they're trying to stand out in a bad way). Perhaps this is tripping the RMT filters- It's almost certain that's why your messages are being blocked, by the way.

If I had to choose between seeing people chat in a more grandiose way than even the NPCs in the game do, and having less RMT spam, I'd take the less RMT spam. that ruins my experience a lot more than the (very) occasional message that doesn't send.

Every single post is important in an RP scenario,

You make it sound like everyday people talking about typical stuff don't consider every of their messages to be important. every chat I send is just as important to me as yours are to you.

It is a problem, I don't disagree with that. But it's not a special problem for you, it is the same kind of a problem for everyone. I'm actually surprised if the bad grammar and spelling of some people doesn't trip the RMT filter more than RP chat, because that's what most RMT do to get around it.