Which grenade perks in the Technical tree affect the Projectile Launch System?

[Dusty the TV Head Man]

I'm planning on using the PLS mostly, and if none of the Tech tree perks besides Doomlauncher, Pyromania, and Burn This City affect the PLS, is there any point to using them?

[Corpse Rust]

None as far as I know except the ones you listed.

[Foster]

Originally posted by AlexCrewSucksAtGames:

I'm planning on using the PLS mostly, and if none of the Tech tree perks besides Doomlauncher, Pyromania, and Burn This City affect the PLS, is there any point to using them?

Doomlauncher, Pyromania, Burn This City and Heat Shield (because it works off of Pyromania's stack system which you can build with the Launcher.)
Doomlauncher combines the effects of basically all of the grenade perks and applies them to the Launcher anyways, so you don't need any of them and it'd be busted if they applied, hell it already kind of is busted even without the DLC making it outright OP like the other arm cyberware.
The only reason you might grab the other grenade perks is if you wanted to do something like use flashbangs, smokes or recon grenades or if you wanted to do an explosives only build since the Launcher has differentiated charges from the normal grenades.
You could also be cheeky and use frags to build pyromania stacks to help replenish Launcher charges, and the grenade perks would let you keep that loop going.