Supporting communities is the best way to help onboard newcomers...there are already communities ready to Kickstart their activities but lacking adequate funding.

Discord is easier and the newcomers can easily ask their questions. For me ,this method you are proposing its gonna be a daunting task and I doubt its long term sustainability.

If communities are given adequate funding and support and closely monitored, I believe it is an easier way of going about this. The communities can be mandated to give either a daily report or weekly report of their activities. most communities have mentors and those that are ready to help out other people.

List of the communities supported by steemit inc can be published and the user decides anyone they which to join to stay active. This will remove any forms of Monopoly and dependency on just one person. There are many experienced person on steemit and in some communities.

Once all this communities are empowered adequately, I beleive they will do better. I was able to learn alot from one of my mentor in steemit @cyprianj, a member of steemstem community when I asked questions, anyone can answer speedily without having to rely on one person. The community though has migrated to the new blockchain but I learnt a lot from the community.

Empowering communities adequately makes it easier