Oh, Enigma got pulled in 1.13? Your argument is moot before that patch. Additionally, you'd shaft your build/build strength in the lategame if you specced into two elements, particularly on sorcs, where their goal was more the endgame than getting there, where you'd need the power of a build specialized with one skill or element. You'd finish the game just fine in a multiplayer environment, which is where your farming/bots/RWT would be applied anyways.
All the above argument is moot against hammerdins anyways, they're the epitome of one-trick, one skill pony, and that's why you used them in your bots. Y'sure weren't running sorcs against immunities or a WW barb against iron maiden in act 4.
I'unno. PoE doesn't feel like autopilot, and it doesn't feel brainless, and there's a lot of builds that work and a lot of tools to make them work. Even playing a cold build, my frost snap/ice spear shadow has to do a lot of sidestepping, crowd management, careful initiation, and other matters of involvement. It's not 'follow the gank-wagon' or 'you must go here to kill things because that's what your character does best.'
It's sort of like comparing Doom to Team Fortress 2 and being upset that TF2 doesn't have strafe running or wallrunning or hacks to make bridges you can cross under and soldiers are the cornerstone of every competitive team and never mind the super shotgun.
My arguments stand as enigma is not a problem. You do not shaft your build/build strength because you couldn't finish the game with one type of element attack. You will not be getting enigma or items that you need to make a hamerdin work in the first place (that also can not kill all monsters as there are magic imune ones). I mean, what are you even talking here about? When I run bots, i dont run them to play the game, but to sell to morons that would pay real money. The same morons that now pay items in POE, but unlike blizzard GGG seems to care more about that aspect as I was banned few times by now.
I mean you here talk about enigma and hamerdin builds like the items that you need to get to make them drop normally, but the drop rates is on level of having few mirror drops in PoE, it aint gonna happen without cheats. The thing I am talking about and you apparently confirmed with your post is that in d2 you could not play the game with using one elemental attack. For barbarian you would need to use Berserk (magical dmg attack) for all the monsters that have immunities or iron maiden. Four wizard you are going two elemental attack, fire, lightning or cold, or all three in most times. You will not be moving anywhere without them.
I know a lot of people cheated the shit out of the game, i did it mostly so i can famr for the $$$ , but the core game and how its designed is few time better than PoE ever will, from the simple fact you can not kill all the monster with holding your one button like in PoE. PoE is dumb and boring as arpg game, and even d2 that is 10 years old does a better job. While other games go away form spam one skill, PoE is fully embracing it, and its bad and very simple design. Its the core problem of the game that so many people find boring. The most important thing for a arpg game, combat in PoE is the worst. How complex the game is in building character, that much simple and dumb it is in its execution in the actual game.
And the most funny thing is, when people posted problems about the combat in closed beta and how the game is to much heavy on spam one skill, making the combat simple and boring, the hardcore poe players actually didnt want it to be more complex, they dont want to manage or have a reason to use different attack and similar, they want it simple, and apparently GGG is of same mindset, so I dont thing PoE will ever change for better with its core gameplay problems.