I've read a few things in this thread and elsewhere that I feel like addressing for you.
Martinez isn't a bottom-pairing defenseman. He's a middle-pairing defenseman (i.e. a #3-4). His average ice-time this season is 21:33, and that's more than you'd like him to play, but if you're playing him only 15 minutes on the 3rd pair, you're grossly misusing him.
You're particularly misusing him if you aren't using him on the PK and PP. As Doughty said, he's a good shot blocker (i.e. why you want him on your PK) and has a good shot (i.e. why you want him on your PP). You might not necessarily want him on your #1 PK and PP units, but he should definitely be on your #2 units.
Someone said that he's "crap defensively." Defense isn't a exactly a strength, but he's not awful at it. As Doughty said, he's a two-way defenseman. He's good at defense and good at offense, but great at neither, and how good he is at either depends a lot on how good the players around him are.
It's true that he hasn't been that good these last two seasons, but there's been so much dysfunction in LA. They've had three coaches in that time and lots of system changes and defense combinations tried. He's also often been paired with a young player, which hurts both his defense and his offense. He's probably also faced a higher quality of competition than you'd ideally want him to face, since he's been the 2nd-most veteran defenseman on the team after Doughty. You don't need to shelter him, but limiting the number of times that he's out against the other teams' top players would help.
To summarize, Martinez is a middle-pairing, two-way defenseman who can contribute on the PK and PP and still has a lot to offer a team, IMO, especially a good team that doesn't have to rely on him as much as LA has had to recently. I think that he'll do well on the Knights and you guys'll be happy with him.
