Okay, it's a good start. Ballsy that you used the name MacTavish, we all fucking know what you did, let's not joke here about why you picked that name, it just means that now, you have one hell of a mantle to pick up on....and you're going to live with it my friend :P
As for specifics, a little more- weapon attachments, a particular knife of any kind? Those aren't the only ones- there are plenty more, but they're two I can pick up, though you have gotten off to a good start as of now. I'm very busy at the moment- I will take you through it, but actually, if you hone it, you can make it look refined. Bring him to life- personality is nice, as well as a little more on history, among others. I know it's provisional, but keep working away at it. You're making a good start- it's just specifics, and I don't blame you for not going too much into depth as of yet, as a provisional sheet- just more would be nice, so I would say you should keep working away.