I've been watching Ritchie for a few years now and I'll shed some light on why I think he's the most intriguing W guy this year.
When he was in the CSSHL he was probably the 3rd, and potentially 4th, most effective guy on his team. (Albeit one of those guys was Gavin McKenna). He wasn't even playing on that team's 1st line in either season that I followed.
Hits the W - rookie of the year. This year - curve continues to go up. Some of that is preternatural skill but I suspect it's mostly just hard work. I hate that cliche shit but it's simply the truth.
Then you consider the late bday....
Historically those kinds of guys work out. Doubly so when they are as smart as he is. He has an innate sense of where to be/where to go next. He also won't cost you much defensively. ++
On to the critical discussion:
While I'm confident he'll make the show, I'm also wondering how high his ceiling is. Drafting a player like him in the top 10 is a bet on him playing top 6 minutes over the long run. And at this point I'm not 100% convinced he has that level in him. He's also slight - teams will have durability questions. He doesn't look 6'0.
Tertiary point is that the interview stages will be important for him because he has a helicopter Dad à la Gallagher. Sometimes that backfires.