Evident's Comments
Mech Mage Deck List
That can work as a replacement, but obviously it’ll make the deck weaker.
Secrets Paladin Deck List Guide - April 2016 (Season 25, Wild)
That does exist, it’s just another style of the deck: http://www.hearthstonetopdecks.com/decks/kaldis-season-18-tgt-midrange-secret-paladin/
Control Warrior Deck List Guide - April 2016 (Season 25, Wild)
I think the removal and the card draw is the most important. Then you want to start building up your legendaries. Dr. Boom and Grommash are probably the most important, followed by Alexstarsza and Ysera. I’m not a control warrior expert, so if anyone else has advice feel free to chime in!
Control Warrior Deck List Guide - April 2016 (Season 25, Wild)
You can replace Revenge with a second Shield Block (or Whirlwind if you value the AOE). Revenge can be a fringe card, and I might actually remove it from this list in the next update.
Control Warrior Deck List Guide - April 2016 (Season 25, Wild)
It’s really personal preference. If you feel comfortable with Patron Warrior then I’d probably play that. It’s the better deck and doesn’t require a ton of legendaries (and also might get nerfed someday, so enjoy it while you can!). I personally enjoy Control Warrior, but the games can be much longer which might be bad if you just want to play casually.
Demon Handlock Warlock Deck List
No, but your win rate against control decks will likely suffer.
Orange's Abios GT Dragon Priest
You can do Chromaggus for Chillmaw (I personally play Lightbomb, but you might want the Dragon), and Sylvanas or second Velen’s Chosen for Saraad.
Update: Brian Kibler's Season 18 Fireworks Mage
I think you can do a bit of climbing, but you also have to be really good with the deck.
Update: StrifeCro's Grand Tournament Midrange Paladin
I think Sunwalker is a decent temporary replacement.
Secrets Paladin Deck List Guide - April 2016 (Season 25, Wild)
The left side with the blue is Mana Cost, and the right side in gray is the amount.
Kitkatz's TGT Season 17 Control Warrior
I think it will work as a temporary replacement.
Kitkatz's TGT Season 17 Control Warrior
You can replace Harrison with Loatheb. There’s not a great spot for Ragnaros in this deck. I guess you could swap it for Ysera, but I don’t think I would do that.
Midrange Hunter Deck List - March 2016 (Season 24)
There isn’t a lot to update, you can add King’s Elekk but that’s debatable. The only other card is Ram Wrangler, and that’s even less likely to see play. Vorpal has a more TGT based list, but I’m not positive it’s better than the standard Midrange Hunter list: http://www.hearthstonetopdecks.com/decks/vorpals-season-18-tgt-midrange-hunter/
Update: Brian Kibler's TGT Dragon Priest
Second Dark Cultist or one Big Game Hunter.
StrifeCro's ATLC Finale Midrange Paladin
Argent Squire could work for Zombie Chow. You could add a second Murloc Knight for a temporary Dr. Boom replacement.
Done!