Been a 94 point team since hiring McLellan (1.14 points per game). A 94 point season would mean 6 straight years of improved point totals/percentage of available points. That would also be the best point total since Jeff Blashhill's first season, after which the bottom fell out.
Core players:
Forwards:
Larkin (28) - DeBrincat (27)
Raymond (22) - Kasper (20)
Defense:
Edvinsson (22) -Seider (23)
ASP (20)
I agree with the OP that some scoring depth would be nice as would a top 4 LHD. With that being said, Detroit has the cap space to take a run at Marner. Not saying it's gonna happen, but if you can sign him and plug him into that second line with Raymond and Kasper scoring suddenly becomes less of a concern. You also have Danielson (20) and MBN (19) who could make the roster within the next 2 seasons.
Detroit has boatloads of cheap bottom six wingers:
Lombardi
Soderblom
Berggren
Ras
Mazur
Hanas
A top 4 LHD would be nice, but again they have prospects who will need to be given a shot or will need to go through waivers, guys like Wallinder, Buium (1 more year in GR is likely), and Albert Johansson. Then there's the fact I would not want to count on Detroit's NA amateur or pro scouts attempting to fill an important role like a top 4 D given their track record to date.
Fix your NA scouting first, see what you've got from your largely productive drafts, then fill openings through trades or free agency. Mitch Marner should be at the top of the list if he makes it to free agency.