I understand you are trying to promote steem on traditional mainstream platforms but have you thought if somehow large amount of people decide to join steem and they get stuck at account creation process. You already know how new account creation can sometimes take 2 weeks to create and sometimes it does take more.
I do see some groups like @steempassport. @steemonboarding, SteemTerminal or even recent campagin from Surfermarly, none of them really offers any good solution for new accounts.
I personally find this initiative by @nathanmars to be very strong one and the way he is leading is quite remarkable, all being done for the Steem community.
We do have this issue for new accounts but I can personally help in creating those new accounts via claimed discounted accounts.
Regarding your mention of other initiatives, they all serve different and very good purpose.
@steemonboarding - To help new users gain knowledge of Steem via video tutorials in different languages.
@steempassport - Decentralising User Account Creation for The Steem Eco-System
SteemTerminal - A discord community where certain individuals can personally answer your all queries related to Steem.
@Surfermarly - I think she has done a great job for successfully running the campagin on Dtube for '60 Seconds of Steem'.