There are six listed examples of tasks you could do. None of those could be effectively done in the 30 minutes you wish for a task to take. Marketing evaluations even on small companies with a low number of pages, landing pages, emails, and conversion funnels should take several hours. In 30 minutes you could provide heuristics/best-practices which could be effective, but could be a waste of everyone's time. I doubt…
On the unlimited plan I can execute on the initial advice in bursts. For example, if you have a spa in Toronto, Canada. I can make a channel or campaign suggestion and then spend your sessions in the month setting up and optimizing that campaign.
I wish you the best and I hope that your advice does not outright kill any companies.