I think the fact that this is primarily a PC port with iOS/Android merely a possibility is a deal-killer for me, thhe content notwithstanding. I'm not saying that PCs aren't technically the largest gaming platform by user base...I'm saying that the largest base of casual gamers with money to blow by far is iOS and Android. From what I remember, LSL and Kings Quest were largely casual in mechanic. Secret of Monkey Isl…
The old Sierra games required constant focus and diligent note taking that I would have thought would rule them out from being casual. You'd never get anywhere with these games just spending ten minutes a day playing on the train. It can work for Monkey Island, since you can keep slamming things together until you win, but the Sierra games punish anything short of building a complete mental map of the game universe.
EDIT: I suddenly became afraid that this post came off as snarky or sarcastic. I didn't intend for it to be. Honestly, I'm just getting old and recognizing that the definition of casual changed while I wasn't looking. I really do want to know what it now means for a game to be casual.