My last deck list for Live☆Twin Fiendsmith Unchained kinda popped off even though it was just a rough draft, and I have spent all week testing this deck to find what new innovations i could bring to the list, so I just wanted to share this list and my thoughts about the deck.
First major change I made was removing an engraver and a tract. This was simply too much for the main deck fiendsmith cards. Being able to turn the Ki-sikil link monsters makes the extra fiendsmith cards not as neccesary because of how easy it is to make requiem in hands that dont have any fiendsmith cards in them.
Next change i made was removing the Abominable Unchained Soul. there really wasnt a reason to include it in the deck, it almost never came up and there are better cards to search with Yama or the unchained spell, it also doesnt have the ability to make Caesar unlike the other good unchained cards.
With this newfound space in the deck I was able to slot in 3 imperms. Having ash blossom as the only handtrap was a major throw. The deck is able to play through interuption pretty well, but it definetly struggles against a fully formed end board that i wasnt able to stop because i didnt draw a handtrap.
A minor change I made was removing 1 Lil-la from the main deck for a Ki-sikil Frost. Normaling Frost can also act as a starter just like normal Ki-sikil (albeit a weaker one.) Also, having Frost in your hand when your normal summon Lil-la gets interrupted, or searching it with sunny snitch when you already opened a Live☆Twin. The utility of this card is definetly something i looked over when I was building the original deck.
The final change I made was taking a solemn out of the side deck for a copy of the big Evil★Twin main deck monster. At one point during testing I was struggling to find a way the deck could get over larger monsters. Something that worried me was my opponent making a giant unaffected tower that i had no out for. This was my best solution for that. I think that 4400ATK was plenty and you only need one copy of it because Trouble Sunny gives quick access to it paired with non-destroying non-targeting removal.
If I you have any questions, please feel free to ask in the comments. I check my decks often, so I will most likely respond.