I wouldn't mind them taking extra time with Engvall and Lindgren because I think they'll be useful depth at minimum.
Lindgren looks more promising of the two due to position and bearing all the skill markers that I'm looking for in defensemen. He narrowly missed out on making the WJC team of stacked defenders.
I know highlight reels make anyone look great, but Engvall is #3 in U21 scoring and is 6'4". Looks like he has the scoring touch and skates straight up ice fast. He is certainly going to fill out to at least 220-230 and why not leave him in Sweden for another year and then a year or two with the Marlies.
Lindgren sounds like a bit of a Stralman clone, which works well in the Clone Wars.