"If your team is skilled, and your team is deep, and your team is well-conditioned..." you could compete just fine (barring injuries) with a roster of only eleven.
I'm not sure I understand the point you're trying to make. What strategy are you talking about?
Yes, I "think you can successfully play high pressure for 80 or 90 minutes with the added benefit of being able to shuffle kids in and out." I thought YOU were arguing earlier AGAINST unlimited substitutions.