The points you made here are very important and should stand true for any leader in any field because communication is an important and necessary skill needed for better understanding among individuals, groups, organisations.
When there is a good means of communication between a leader/boss and his employees, the organisation or company moves well and motivation steps in also because despite the hierarchy in command, the Chanel and means of communication does not indicate oppressiveness or a bossy attitude all the time demanding things to be done at your own will without regards at all
I believe if all leaders will at least exhibit some of this points, they will experience significant growth and smooth sailing of their company, organisation, groups or industries.
You've paraphrased my post completely.