Genestealer broods, how viable in 6th?

[bloodborne]

Okay, so this is coming from someone that does not, and never has, primarily used genestealers. Their fluff is fun, but it does not fit particularly in line with the way my invasion force operates, as they would generally disappear long before the invasion occurs. I did however think it might be fun to create a stealer cult for the hell of it.

The way I see them,

the genestealers that infect the populace are general troops, with broodlords acting as a "leader" of smaller broods within the stealer cult. Ymgarls would end up being the more advanced "hybrids" between the genestealers and purestrain(forgot that creatures actual name). With the purestrain as the leader of the cult. Had in mind to do a little conversion work to a tyrant body(lopping off the chimneys and adding on a carnefex head), however, I forgot that Tyrants no longer are able to take rending claws.

So my question is this, how viable is a stealer cult in friendly and light tourny settings, and how would you see a "purestrain" kitted out?

[wisdomseyes1]

Genestealers got hit hard, to me, with the outflank loss of assaulting.

Broodlords, however, gained psychic powers, which may or may not have increased their value

[Jabberwocky]

They are still fairly viable, but you need to make good us of infiltrate and target saturation.

Have multiple broods in their face from deployment, with cheaper vanilla broods giving cover to toxic/Broodlord broods behind.

If you go first, you push forward (preferably in cover) to give you turn 2 charges with multiple units, forcing the enemy to split fire.

If you go second, you will take a beating and deploying out of sight becomes more important, while you wait for Ymgarls to come in.

A strong leader beast could be a Swarmlord, with big synapse and granting preferred enemy to your bigger broods, as well as furious charge when you need to hit walkers. With biomancy he can grant FnP or with TK he can grant invulnerables or teleport himself into the kill zone, drawing fire.

[squash]

They're so expensive though, and the 5+ saving throw is quite useless against small arms shooting. I've also had terrible experiences charging into cover, I have 30+ genestealer models and other than Ymgarl I just don't know how to use them anymore.