minions have a bad rep for being the lazy build but indeed it is viable you just need time and dedication to getting good minions
for end game, skill gems for minions is essential and if your talking about end game then skill gems should be part of that end game. As for the wisdom + minions its even more viable than STR we wisdom builds can do far greater dmg than STR.
For example My red mist is ticking for 10k critics and blood command is tick for 14k, now if your minions are strong enough
to out last the brutal punishment of the relic you will have enough bodies on the ground for blood command to deal the dmg.
You did say End Game there for you will need Judgment skill gems to boost the resitance of the minions so they dont get squashed by relics and or the up coming bosses on area 4.http://mythosforum.t3fun.com/index.php?topic=49.0