Now that a War Server has been introduced to Tentlan I think we need to protect our troops better without haveing to walk them for miles which is as tiresome as collecting resources. So I think a building like the Underground cave should be brought in so when a attack come in some troops will stay safe in the barracks. Obviously it would not keep troops safe outside your city. But for small freemium players like me I cannot contend with the premium players who spend money trying to get ahead of everyone. Anyway I think the first few levels would look like this:
Lvl 1 - 2 Troops Protected
Lvl 2 - 5 Troops Protected
Lvl 3 - 10 Troops Protected
Lvl 4 - 20 Troops Protected
Lvl 5 - 35 Troops Protected