For telegram, Facebook, twitter, article writing, video creating, blog writing I think it is okay if he/she is brand new or newbie. Because they will not make any marketing on the forum they will do their marketing out of forum. And also same for airdrop. I think only signature should have restrictions nothing else. As only signature has limitation regarding membership ranks. And for your kind information signature cant be considered if they post report or joining. I this case newbie and brand new members are necessary. Because there are not too high number of higher rank member. If there is any more restriction on newbie and jr. member then that will be harmful for bitcointalk.org Already decreasing number of participant on bitcointalk. I want to say if you post bounty on bitcointalk then if you get 100 participant then you will get 1000 if out of bitcointalk. For example bountyhive, bountyportal etc. So, more restriction mans to loose users as a result lose projects. SO no need to make restrictions any more.

Update:
If any more restrictions then existing higher rank members will be benefited for a short time. But for long time all will be looser.