The Ceci comparison makes no sense at all. Actually the bests comps for me are already on the Oilers in Nurse and Klefbom, slanted more towards Nurse. Broberg has great size and great mobility, but has questionable hockey instincts and offensive upside.
I wasn't a fan of the pick so high considering the Oilers already have Klefbom and Nurse who bring very similar skillsets, seemed pretty redundant to me. They could have used a forward more like Zegras and I've never been a fan of taking LHD's with top picks in general unless they are of the super stud variety like Dahlin, Heiskanen, Hedman.
The size and skating definitely stand out and make Broberg a flashy prospect, but he's going need time and patience. He is going to need a lot of reps, AHL time after another year in the SHL is probably best. He should be a really good puck transporter like Nick Leddy, but it remains to be seen whether other parts of his game will stand out in the future.
I don't see a top pairing guy in him, but a solid #3D as his ceiling. He doesn't look like he'll ever be QB'ing the #1PP, but should log good ES minutes and be able to contribute on the PK. Broberg should be around 20 minute average TOI with his potential profile.