What's the most recent build/set up that you've discovered?

I would address things point by point like you did but it all gets too confusing for me, console scrub and all that. 

I realize it may have appeared as if I was 'blaming' you for the necro, when in reality I was meaning to credit you with inspiring me into waffling on about one of my favourite things. 

I'm happy to concede that just about everything you say is true, but accruing Talon CP has never been an issue for me, and I still think that in this particular instance the Acolyte is actually a better fit, because of the stunning, dodging and freedom of movement in general. The reason for the Locust in my suggestion is to cover the single weakness she has - Cerberus turrets at range: probably the only true justification for taking hard cover as a Justicar. Ravagers might get you sometimes, and of course Primes and Atlases (and Rocket Troopers), but they are slow enough for you to run, dodge and Reave/Bubble them, but not turrets, which as we all know will cut you down before you even know what hit you. You can't charge an Acolyte safely from hard cover, hence the light, accurate Locust (a gun I have a huge soft spot for as I believe it's underrated as a crutch for players (like me) who are incredibly lazy when it comes to headshots). Sure, it's no Lancer in those circumstances, but it'll get the job done safely.

I didn't mention Praetorians because I'm happy to admit that I still don't really know the most efficient way of dealing with them. I do in theory - Acolyte, force them to land, Reave, Bubble, Reave, with more Acolyte or Locust - but in practice they will almost invariably have their invulnerability bubble in place so the sequence ends up being skewed or redundant.

As for your build, I don't really understand the smaller Bubble, nor your rank 6 Reave choice. Or perhaps I do understand them but think they're wrong?!  If using the Acolyte or Talon, 75% more Armour damage is the more logical choice. I remember spending a few days burning respec cards making individual changes to each build, and I can say with some confidence that the only real advantage in your option is the increased damage reduction, which is beneficial because of your lower health, like the smaller Bubble I suppose - it's like your build has to be that way because of other choices. To me, mine is one of the few builds in the whole game which doesn't feel like I'm making any compromises on any level. I prefer the additional health to begin with, and consider extra duration on Reave a waste in a team game as the enemies should all be dead by then. As I said back in the other thread, she's not a Drell. 

Lastly, one of the reasons I'm so vocal about the Acolyte Justicar is because pretty much everybody has access to an Acolyte (and Locust), while Talons are Ultra Rare. My build is very strong and survivable and might help people play Gold with something other than a godforsaken AIU/Reegar, TGI or Jugg, increasing the amount of fun for both them and their team. 

Edit: hadn't seen @fmulder 's response. I would say that 66356 could be regarded as the learning build, with my 66455 the next logical progression, and ultimately 66653 for when you have it (or her) absolutely nailed. 

Edited twice as I can't feckin count!