"Work as if you live in the early days of a better nation"
The Wazir and Capacity cards have added a lot of options to the game, but I have a couple of doubts you may help to clear.
First. Wazir cards refer to a political card in a region, which is the region in which the tribes are located. Can the tribes be more than the number of purple stars in the political card of that region via Consolidate action? That said, can they be more than three?
Second. Capacity cards such as Jihad makes so that the tribes may leave a region to campaign, as the tribes behave like if they were Armies. Now, if ALL the tribes leave a region, does the political card be discarded - and with that the tribes themselves?
Nope. As Thierry notes, the discarding of political cards because of the loss of tribes is a feature of the campaign action.