What are his strengths? Weaknesses?
Glover measured in at just a hair over 6'3" at the NHL Combine, so he's definitely got the size necessary to play in the NHL, and he's an excellent skater, so there are no concerns about his mobility. Glover might be one of the better pure athletes available in the draft. He's not an overly physical presence, preferring to use his skating ability to make plays than brute force.
The question is if he can be a hockey player. For a player with his physical gifts, Glover just doesn't dominate games with his skating in the way one might hope. He's a very good defenseman that looks like he has the tools to be a great defenseman. There are also some concerns about his defensive play. He can get lost in his own zone at times, leaving forwards wide open, and is serviceable, but not great defending one-on-one rushes.
How was his draft year? Trending up or down?
Slightly downward. Heading into this year, Glover was considered a potential first round pick by many. But as prospects are watched more closely in their draft year, the finer points of play are given more emphasis, and Glover slipped a bit. Glover didn't necessarily have a poor season, but rather than continuing to develop and becoming the top defenseman on the NTDP squad, he was just one of a bunch of pretty good pro prospects on the NTDP blueline alongside Jack Dougherty, Ryan Collins, and Jon MacLeod.