Well they haven't picked many forwards early in the first round, Kotkaniemi and Galchenyuk. Caulfield, too soon to tell. Kotkaniemi, getting there, Poehling, maybe, Scherbak, late pick, McCarron, reach, bust, Galchenyuk, bad draft year not a bad pick, Leblanc, not a great pick, bad development, bust, Pacioretty, truly inspired pick, Chipchura, defensive emphasis, bad pick, injury bust, Kostitsyn, good player, bad pick in a loaded draft, Higgins, not bad...
I think they should be drafting more offensive players in the first round because there is more useful data. Forwards have points, and, while they should play defense, they shouldn't have to concentrate on defense in lower leagues if they are to make the NHL. I haven't done the analysis but I saw an analysis years back by some obsessive Leafs fan comparing their picks to the highest scorer available, stats only, and part of the result is that the Leafs were a disaster then, but it also showed value in just looking at the points. Scouting has massively improved. If you sort drafts by goals or points the older ones had way more late picks high, while recent drafts have more first rounders and fewer late picks.