From relativley new player's perspective:
-Minako box is great. Katashiro is great model and you can summon 2 on turn 1 (if you get the cards).
-better option to Silent Strike is Fuhatsu box (or Miss Guided, single model). Fuhatsu is very strong, some say broken. I'm not good enough to judge that, but he's great. He will flip a lot of cards, severes included. And with Misaki's bonus action you can shuffle them back in the Fate Deck, leaving you with stacked deck.
-Yasunori was great before I started playing, and got nerfed, a lot. I recently bought him in hope he'll be useful again some time in the future It would probably be better to look at Shadow Fate box, instead of Yasunori.