Heroes 5.5 WarGame Edition - Tactical Edition.

In principle, there is a possibility to develop the Capitol branch based on tiers (from 1 to 7). But is it worth doing (will it slow down the pace of economic growth)?

In scheme 1-2, can the Capitol be built on turn 4? If so, then I strongly disagree. Restrictions on the level of the castle should be applied to each building in this branch. If it is technically impossible, then I am only in favor of scheme 3.
Scheme 2 is definitely better than scheme 1, but the second arrow from the Citadel to the Stable needs to be removed; why is it needed if you are going to increase the castle level for the Knights?
Scheme 3 is closer to the original for me, but whether it is better than scheme 2 needs to be tested; the main thing is that the Capitol cannot be built before week 2!