[Nerco / Kin Would it be close to Demons?]

I know Necro is close range, would they be able to compare with Demons?

[Thoughts- Now that I have played Sentinel for awhile - also why bio armor good]

Dittos to the OP,  I run a dual pistols / Bio sentinel and it's great. I ran as a duo with my son with the same build like two gunslingers Red Helmet and Redpool if you get the comic reference.  It's a great crossover / dynamic duo.

[Psionic Melee]

Sweep is junk, don't bother with it.

 

You will need all the endurance help you can get.

 

Aw, man, I was hoping Sweep would be decent. Cone too narrow, or damage too weak?

 

Good to know about the endurance.

Sweep is fine and can disorient, it's cone is good, DMG is good, and added soft control

[SS/Bio Build?]

Bio has an oh-shit button just as effective as DA but it comes late like lvl 35? And it gets a pre-heal alpha absorption power.  I'd be fascinated to see the effect rage + adaptation has on DMG output

[Best Secundary]

WP secondary is great, but as an alternative consider shield as well. Psi and Rad melee would pair great with both. Of course dark melee and shield is a classic with great synergy too.

[Spines or Street Justice?]

I've had SJ on a Stalker (SJ/Ice), and Spines on a Scrapper (Dark armor), Stalker (WP) and a Tank (Bio armor) all to 50

 

That said, SJ will be noticeably better for soloing Bosses and EBs.

 

But if you want to solo +3 without bosses set to a team of 8, then go Spines.

[/WP or /Bio? Not sure which will be better long term.]

Here are some differences

 

Bio gets some resistance to -End & -Recharge

 

WP gets resistance to -Perception, Repel, Fear, Confuse and minor -Def

[/WP or /Bio? Not sure which will be better long term.]

I am up to lvl 46 with a Spines/Bio, it's enjoyable (yay two damage auras!) as others have mentioned about adaptation and that the differences are noticeable and allow different playstyles on the run. 

 

The keys for me have been recharge and HP.  Having Ablative carapace up for absorption to take alpha strikes and such, with Parasitic Aura as the back up for really nasty situations. and then keeping DNA Siphon as a back-up for a self-heal.

 

This method has worked great on +3 ITFs with just SOs for instance, with the only deaths coming from team wipes at the end of the first mission, with that huge Kheldian onslaught.

[/Time]

What about time with bots?

[Sentinel Archetype info]

A good set could look like: 

Dark Assault:

1-Dark Blast  2-Smite  3-Gloom  4-Night Fall  5-Heart of Darkness  6-Engulfing Darkness  7-Life Drain  8-Moon Beam  9-Midnight Grasp

 

But the difficulty comes when adapting Blast sets that don't have a melee counterpart like Dual Pistols or Sonic.

[Sentinel Archetype info]

My issue with Sentinels is that the part about Blasters that made their squishiness so apparent was their often melee range secondary attacks.  With the Blaster secondaries gone, the aggro has seemed less of a concern and so my need for defensive capability from the Sentinel secondaries comes off as less than thrilling.

 

I feel like Sentinels could have been better off if they had combination melee & ranged (like Dominator secondaries) as their primary set.

 

Yeah, that's what I was thinking, something more like a Dominator's Assault secondary seemed appropriate, just take out the snipe and any power_boost/aim/build_up

 

edit- and without any boosts just give them dmg modifiers of something like 1.05 to 1.125 for both range and melee.  Seems like a fair trade-off

 

Having a mix of shorter-ranged range attacks and melee attacks forces them to stay close to the battle for a good attack chain, and they still benefit from the utility of having some range. 

[Martial Arts/Ninjitsu Build]

So how's Ninjitsu working on a scrapper?  How effective are those little differences from the stalker set?