The Foundry is a universal constructor. It makes sense that he would be able to synthesize a new mask there with little difficulty.

There is a build that uses it. Light +Def +Alac is for pebble/lightning DPS sages/sorcs. Whether or not you could sell it is a completely different question.

I think what you're looking for is "Focus Target Modifier" (not near the game, so I can't verify). If you assign this key/button, if you press and hold it down while you active some other power, the target of that power is your focus target. I have mine mapped to the middle mouse button.

Combat Sentinel is probably close to the bottom. By reputation, Dirty Fighting Scoundrel may be even worse, though I haven't tried that one (Dirty Fighting Gunslinger is supposed to be quite good, though, so YMMV on future nerfs in that tree).

Well, the most interesting thing about this guide is that it doesn't even mention its inherent assumption: if you're playing a Sentinel and are interested in effectiveness, you use the Watchman tree. If your basic character design was built around Ataru form, you've got to learn to play with what appears to be around a 25% DPS penalty, far fewer interrupts, and a mobility disadvantage, which ups the difficulty considerably. One of my biggest complaints isn't even about the hard-mode nature of Combat, but that Ataru, the acrobatic form, is less acrobatic than either of the other two trees. This could be mostly resolved by switching out Displacement (Combat saber throw immobilize) for Close Quarters (Watchman force leap range) and switching out Debilitation (Combat Master Strike immobilize) for Blurred Speed (Watchman force leap cooldown) and then doubling the effect of Blurred speed so you spend much more time in the air and give a reason to put points into Focused Leap. (To finish polishing this, you'd also need to tweak the tiers of some of the powers a bit.) This would solidify Juyo form as the "you will stand there and take it!" and Ataru as the master of mobility, which is much more thematically appropriate for both classes. It also fixes the interrupt imbalance, since Juyo still has Watchguard, and Ataru can now use the leap. (I suppose I should really have stowed this in a separate thread to give it some visibility. Maybe I'll do that later.)

What's the procedure for resetting this if your phone breaks? The main problem I have with it right now is that there seems to be no way to have a backup key, and there's no clearly stated procedure for rapidly re-authenticating without it to turn it off, so in my case the odds are substantially higher that I'll be locked out of my account by an issue with my phone (left it at work, battery dead, dropped, etc.) than that I'll be locked out of my account by an account hack. As long as that's the case, having the security key _reduces_ my security, not increases it. I'm no stranger to dual-factor authentication (I carry around a SecurID fob for work), but it only works well because you can get a replacement on an hour's notice by wandering into the correct building and showing your badge. That's not something I can do with Bioware, and even their phone support was inaccessible the last time I tried it.