Grats on the kill.

To answer your original question: Yes, you can crit and get an augment slot on the BOP pieces.

This. And to be fair, the person getting kills may well be preventing people from stopping you from scoring. Just as the healers are keeping you and others up to enable the same. Obviously not always the case and I agree the first person on the list tends to get all the credit, but such is the game.

Bodyguard spec, as a whole, is relatively mediocre until we come into our own later on eventually getting Kolto Shell and Emergency Scan. Those skills, along with the experience gained from playing and learning to manage heat effectively, make healing a much more manageable, and even enjoyable, task.

It's a free-to-cast reactive HoT. I don't think I need to say any more

Keep in mind that Kolto Shell can only be deployed on one target at a time. If you are having issues with your tank not getting aggro on all of the mobs in a pull before they aggro you from the heal, drop it on yourself before the pull and then just place it back on the tank shortly after when he has had a chance to establish threat.

You have a full quest log as indicated b the 25/25 at the bottom. I know - the message isn't perfect, but try deleting some old grey quests and you'll have more luck.

Darkkyn's spec is exactly what I'm using @ 50 and I love it. I'm sitting @ 30.65% crit @ 50 without much of anything specifically trying to get it and CR is up a large majority of the time. Crits from Kolto Shell, Rapid Shots and Kolto Missle heals will all trigger the effect greatly helping with the uptime. As for the benefit of the alacrity... I haven't been able to do much testing with it yet since I just hit 50 Sunday night, but I expect it to be a strong performer. It very well might not be apparent in low quantities but high-end PvP/raid/crafted gear seems to focus on it pretty heavily so getting up to noticeable levels shouldn't be much of an issue. Real-world tests will of course be the deciding factor but the overall balance the spec provides seems like it will be a strong build.