This is a definite coding error. I've seen a set of BH boots that also appear as "royal blue/legendary", and I believe a dev post or patch note a while back acknowledged that this is a bug. There are currently no true legendary items in the game. Any item currently appearing with the bluey-purple Legendary colour is actually a bug or coding error, and the item itself is a normal 4-slot orange item.

22A is a dropped or quest-given mod, while 22B is the crafted version. That's the only difference

He'll cast Mind Trap (the prison spell) once every couple of minutes regardless of how many people are already in there, sadly. You need the DPS outside to take the traps down, or your entire group might get stuck in there. Although, after a minute or two, the Mind Trap "debuff" runs out on a player, and they'll get kicked out of it, back to the battlefield.

You'll need to contact Support via telephone to remove your old security key (they won't do this via email, you need to use the phone). Once that's removed, you can add the new one exactly like how you added the old one

You can romance Temple as a male Agent, she does have a mini-story thing. At around 6000 Affection (I think it's around there), she'll ask you to choose between her and Kaliyo, you can't have them both

There's currently no "neutral" item vendor, although it has been mentioned as a point for future development. However, you should be able to get equivalent gear via Flashpoints for the most part.

The Infiltrator tooltip isn't very clear, but it actually ONLY works when stealthed. When you're not in stealth, you'll move at 100% (normal) speed, with sprint you have the sprint bonus (I think it's +35%?). Basically, all Infiltrator does is removes the speed deduction from stealthing, so you'll move the same speed when stealthed as you would otherwise, with or without sprint. So, with sprint you're going 135% (if I'm right with the sprint amount, I can't recall it). With stealth, but not sprint, you're going 100% With stealth and sprint, you're going 135% But without stealth or sprint, you're still just going 100%, there's no bonus there.

The map keybinding option is under Keybindings > Interface > Toggle Map Pane, it's near the bottom of the list, so you'll have to scroll a bit. Hope this helps!