War
I have seen war attack succeed, or fail, by 1 HP.
Since an effectively infinite number of players can attack your war defense team, one of those attacks is likely to succeed, or fail, because of any X*+1 hero.
Welcome to RNG RPG.
Return on Investment - Defense / Defense
However if you are a number cruncher, X*+2 is the better deal with X*+3 being the best deal that does not involve a Talent 2/5 .
For defense triggered talents on defense teams, Centers are best investments, with corners being worst position ( but depending on hero, not worst for attack teams. It gets complex quickly ).
They are not best because of talent use/ synergy, but because they get hit by normal/ matching/ tile damage the most.
Return on Investment - Defense / Attack
For attack triggered talents on defense teams, Corners are best investments, with Centers being worst position ( but depending on hero, not worst for attack teams. It gets complex quickly ).
They are not best because of talent use/ synergy, but because they get the most number of normal/ slash attacks before dying.
Return on Investment - Attack
Healers, and generic/ rainbow defense debuff, are the best use on attack teams.
Unless generic/ rainbow defense debuff is neutralized ( looking at you centers with cleanse ), then attack buff/ mega attack buffs are best on attack teams.
X*+1
But.
You use your favorite heroes the most.
This is a game.
I strongly recommend making your favorite heroes X*+1 ( see notes ).
Notes
Click for notes
They still have a few kinks ( see rant at end ) but emblems were the best change to Empires the Devs ever did that does not focus on the forums.
Emblems
Emblem kinks
SGG did try it once . And while I strongly disagree with the decisions they made (I even offered a fix) , it was the one time SGG exceeded my expectation for Empires. I still have a momento of that time . I still think there are ways it could be added to the game ( see squires in notes ).
Like TSR adding level 0 cantrips to a level 1-9 spell casting system, new code should make most players say “Thanks SGG, that really made Empires better.”
FIN