We all know where this game originated or "inspired" from, correct? In case you didn't know or forgot, its from China.
That means the chat system was built corresponding to Chinese, and not English. For the in game chat, I believe the cap for one message is around 55 letters/alphabet/symbols/etc. In English, 55 letters is roughly 7-12 English words; in Chinese, 55 letters is 55 words. Assuming the font size is the same, which is likely NOT the case, but let's just assume it is for simplicity's sake.
So simply saying something like, "change lane for guild war" would cost you 25 letters/spaces in English, where as the equivalent in Chinese is 4-5 letters which is 4-5 words. For Chinese, one message can contain as many as 55 letters, which is up to 55 words. 55 words to convey a message should be do-able for anyone who's got enough education. Which means in Chinese, this chat is efficient enough to convey messages. For English, not so much.
Question is, since most top guild use Line or other communication app, why should Lilith even address this problem. In simpler terms, why fix a problem that will not increase their revenue?