The only way you trade Ricky (if at all) is on the draft floor when the pick is on the clock. If the scouts feel strongly about a guy when EDM, COL, and NJ pick that's when a potential deal could happen. Bob would obviously have to have had prior conversations with all those teams to gauge interest and a firm price based on the desired draftee being available at that given pick.
It's a ballsy move and doesn't seem like Bob's kind of deal, but who knows. If the scouts really love one guy, maybe they browbeat Bob into making plans. I know everybody says the draft is C heavy, but you know all of those top 6-7 guys are not going to be studs. There will be disappointment because that's the nature of the game. You might end up with a very solid 2C but people will be pissed if the pick doesn't measure up to prime Getzlaf level of production.
While I think the bolded is all very true, it must be said that the vast majority of young top centers in the league today were acquired via drafting, which is also an important part of "the game" that you mentioned. In today's NHL it is virtually impossible to win a Cup without a top center, and while a top center is not necessarily enough to guarantee success by himself (see Edmonton), it is a necessary building block that basically every team needs. IMO it's not like teams have the option of skipping said game.
Teams like Anaheim, NYI and Carolina have been extraordinarily fortunate, in the sense that they were able to draft an elite centerman without having a top tier draft pick (Getzlaf @ 19, Barzal @ 16, Aho @ 35). Right now Anaheim is looking at a potential bottom-10, maybe even a bottom-5 finish, which in a C heavy draft is IMO their best
chance at a young 1C in a long while.
When it comes to trading Rakell though, that's a very different story. It's not just a question of whether we'd trade Rakell, it's also a question of whether other teams would give up their firsts (and that high potential) to get Ricky. I strongly doubt that any of the lottery contenders in COL, NJ, EDM, etc. would do that trade, and I strongly doubt that we'd be willing to do anything less.
Not to mention that there’s a high chance our scouts go off the board and pick someone completely random anyway. I still remember the reactions in 2012 when we picked Lindholm. Hindsight would have him in the top 3, if not 1st overall.
To be fair, Lindholm was a super late riser during his draft year, to the point where you could say he emerged from out of nowhere (who knew that Pierre McGuire's "this is a steal" -comment ended up being so accurate?). Had people become aware of him a month sooner, I strongly doubt he sits at 15 at TSN's pre-draft list, he would've at least been on par with Rielly, Trouba and Dumba.
I can definitely admit to saying "WTF?" when I saw the pick for the first time, and I don't think it's an entirely unreasonable reaction either. If you, as a GM go that off the board with a 6th overall pick with all the expectations and potential involved, you better make sure that prospect delivers. In this case the pick turned out to be gold, but one can't deny the risk involved with doing something like that. Regardless of Lindholm's perceived talent level on draft day, Bob put his job on the line right then and there when he called that pick.