Shift+Right click and drag also breaks down stacks of items and it doesn't link it in your chat.

I played an Imperial Agent during beta and while I never made it all the way through the quest series, what I did finish was superb. Also did trooper during beta, but I found it to be pretty meh. It was a bit too predictable to me. Currently I'm playing a smuggler and I like it. Not as much as I like the IA story, but then I just started Act II with my Smuggler so that may change by the end of it. I'll have to level another IA at some point and finish the story line for them as well.

You apparently don't realize that the (Smuggler) portion of Corso's codex entry simply means the entry is a Smuggler only codex entry and not that the character himself is a smuggler. Any codex entry with a class name in parentheses after it is specific to that class and is obtained through the storyline for that class. Companions don't really have a proper class the way players do. Corso is a ranged tank and so is most closely related to a Vanguard or a Powertech. As such he wears heavy armor and benefits from aim, endurance, defense, etc.