[samiru]

English might not be his first language. Not mine either, so I did not notice the bad grammar!

I have noticed in my own use of English language that after getting into a level where I get understood well enough in work situations and such, my language skills have started to stagnate. It does not help that even I use mostly English in my daily work, there are practically no native speakers around.

But I do agree communication skills being part of what is considered seniority. Also, being able to hold different viewpoints and communicate those to others could be considered part of being mature too.