I am also having the same problem, got the Royal huntsman, geared it up, was expecting it be behavior good with his A3, but it never uses the A3 in dungeon... 

BUMP

This problem isnt just on force keep its all dungeons he never uses his A3 on auto except sometimes he will finish a boss off thats dying in the next hit with it.. Will this ever be addressed?

This needs to be addressed!

Enemy has weaken and defense down, Royal Huntsman has attack up and A3 ready.

He doesn't use it....

Can someone just slap an AI priorities over him, so  that he will use his A3 if he has attack up on him.

I know it wont be perfect always, but as its ignoring defense its not as "complex" as example Royal Guard takedown.

Something like this should be fixed in a matter of minutes, assuming that there is seperate AI scripts/settings for each champion.

Plarium please.. this is something that should be fixed quite quickly by a rookie programmer even.

If(weaken in team) {if (weaken applied(target) {(if (attack boost up){a3(target)}}}

Elseif (attack boost up){a3(target)}

Assuming there is more logic and many more factors behind it (enemies alive, what debuffs are up, who is the best target, killable? afinity..  turnmeter ect.ect. ), this should be done in a matter of some hours and could be revisited if not perfect. 

As of right now the skill is not being used at all, and all those that spent ~100€ + to pull and level this guy are being screwed ;).

Sry for the rant, but i cannot believe that a company with so much spending addict customers cannot allocate some minor resources to have one programmer fix all those AI problems in a matter of weeks.

I have the same problem geared him up but without using A3 on cooldown he is useless in any Autofights. Please Plarium fix this.