Sorry, I did not understand your suggestion: are you suggesting to switch the entire forum to RTL direction?
No, I didn't. I said, that my proposal in this forum entry to do it is obsolete because the forum script does it by itself, if and when the information is provided in the langauge file.
I took a screenshot from Gmail as an example:
As you can see, Gmail offers two types of paragraphs:
<p dir="ltr"> <p dir="rtl">
Well, maybe Gmail is just using alignment, yet it actually works perfectly as if Gmail is using direction. (I don't know how).
Anyway, this feature is fundamental.
Without this feature it is impossible for RTL users to add Wikipedia entries, write in social media, etc. It's really fundamental - yet missing in lots of forum systems, probably due to unawareness.
In RTL direction you can mix Right-to-left text with Left-to-right text without any issues.