Now maxed kingdoms will provide the corresponding skills to all troops, regardless of the home kingdom you have chosen - or the banner your team battles under. e.g. if you have Karakoth maxed to level 10, all troops within your teams will receive a +1 to magic. The updated kingdoms now require gold to level-up rather than maxed (lvl 15) troops. Each level of a troop within a kingdom now is calculated into the kingdom’s ‘power level’ … along with the number of troops owned under a kingdom, and the traits applied to each troop.
You can see the workings of the new features by viewing some of the previews:
Chests and Keys: ( 1.0.8 Preview Part 1 - Chests and Keys! )
Upgrading Troops: ( 1.0.8 Preview Part 2 - Upgrading Troops )
Shop and Kingdoms: ( 1.0.8 Preview Part 3 - Shop and Kingdoms )
I hope that helps.
FYI… the green shield and the number within is your VIP rank.