Well, I'm not on Reddit, but your post was being discussed on the Discord last night so I read it from there when someone posted a link. And then when I logged on this morning I saw someone had posted another link to where you'd deleted your post (they kept copies) and reposted it somewhere else, I think? I didn't check that one out, though, so could be wrong.
Anyway, let's see...
Language - Still not sure what you mean by this. If there is some aspect of the terminology that confuses you, perhaps you could specify what it is so someone can help you? I thought all the terms were explained pretty well in the rulebooks and are universally used across all cards (as in, the meanings don't change, not that every word is on every card, because that would be silly :D).
"Bad cards" - I would say there are no truly "bad cards" in the game. Whether or not it is bad depends on the situation. Fighting Miss Information on her front side when she has none of her targets in play and you're in the Freedom Tower? Anything that gets played on a non-hero target is "bad" (looking at you, Jim). Fighting the Dreamer? Any AE damage ability is "bad", and is worse the more damage it deals. Fighting Apostate and he's got the Tome out? Suddenly anything that lets you draw a card becomes "bad". You see what I mean? Yes, some cards are more useful than others (for example, I don't think I've ever played Enduring Intercession), but it depends on the situation. It depends on which decks are in play, and which cards those decks have out, and the status of those cards (ie if it's a target, how many hp does it have left, does it have soak/damage buffs, etc). It depends what other options are available to you at the time. It depends which other heroes are around to take advantage/help you take advantage of whatever cards you have, as you do the same for them. Just because a card doesn't get played often or is only useful in a few outlying situations doesn't make it "bad". That's a very...definitive term to be using in a game where a lot of what makes hero decks "good/bad" is down to opinion. I've never really got the hang of Fanatic or Setback, for example, but I'm not going to say they're "bad" heroes. They just don't really suit my playstyle. There are people who don't like the Adept, who find him too complicated. That's fine - it means they won't be picking him if we play a game, which means I can :D.
Counterpoint Bulwark - I've never fought anyone on Ultimate Mode (as mentioned somewhere back in my rather lengthy previous post, I just stick to "Normal Mode"), but presumably the tendency is for everything to hit harder/play more cards (which probably involves them or their various other targets hitting more often). Which means soak is even more useful, surely? Reducing any damage when you're being pounded into the ground is surely never a bad thing? Not so useful against, say, Plague Rat (or anyone else who deals a lot of Irreducible damage), but still, it can help. It's sort of like pre-emptive healing, in a way - rather than someone losing a hp and getting it back later, you're preventing them from losing it in the first place when they otherwise would. And as for Bulwark's Accompany text...you're maintaining that giving someone extra draw is a bad thing? It's only "bad" when you're being punished for doing so (eg if Apostate has his Tome out). Otherwise, giving other heroes more opportunity to dig through their decks, especially if they're not that good at it to begin with (eg Legacy), can only be helpful to them - you might give them a card that turns out to be perfect for the current situation, which they can then play on their next turn rather than waiting another whole round to be able to use it. And sometimes you just get Blinding Blasted to hell and everyone just needs something in their hands :P.
I recall you saying you were quite new to the game - I maintain that playing more often, more games, with more deck variety, is a good idea. It'll giv you more of an insight into the variety of options, and if you also play with different people then you'll be able to see how they play the characters. No-one's method of playing is "wrong" in this game. That's not how it works. I would say maybe "sub-optimal" would be a more appropriate term. There are multiple ways to play each hero, and the promos assist that by changing the hero's base power in order to focus on a different aspect of the way their deck works. This doesn't make any promo "better" than any other - it just means it changes things up a bit, and chances are you'll find some promos just don't work so well with your playstyle, especially if they change things a lot.
Oh, btw, something I forgot to mention in my previous post - I seem to recall you mentioning at some point that you couldn't find any other guides on the Adept - there is a forum user here called...Flamethrower, I think? He wrote a bunch of guides for most of the decks a while back and I'd be very surprised if he didn't do one on the Adept, given how long Infernal Relics has been around now (it was the second expansion, after Rook City). I don't think I've read it since at the time I was newer to the game and didn't want to be "told" how to play a character. I'd rather figure that stuff out by myself. But now I've been playing for years and have however many hundreds and hundreds of games under my belt, I feel like it's okay for me to offer input on stuff like this, since now I can be fairly confident that I know what I'm talking about :). Still not going to try and tell people how to play characters, though, or say that some cards are outright better or worse than others. If anything, I'll say whether or not they're useful, and try to give examples. But the wonderful thing about this game is that there are so many possibilities, so many options...I mean, you could play against the same villain, in the same environment, with the same heroes playing in the same order several times in a row, and still have a different game every time :D. That probably explains why so many of us have played it so often and for so long. Plus, of course, the fact it's co-op. I love co-op :D.