So Redant, do you finding the first turn kill with 4 blasters in a raider to be better or worse than 2 trueborn with DL? I'm thinking the first round kill might be better than 3 turns with 2 DL
To be honest, I find the 2 dl setup to be better as it serves the same function as the old warrior sniper squads.
If you move 6" then you have a 24" effective range with the blasters unless you want to move the 12 and disembark and fire giving you 30" but it leaves them vulnerable. But they might not be getting first round shots depending on the board. Its more likely that dl's in cover will get a safer shot on turn 1.
Im a big fan of the second SC on the venom so I found the venom to be a bit more vulnerable than when it stays out at max range with a NS on it.
The 4 blaster setup also runs at a little over 170 point range. For about another 22 points, I can get a second DL squad that I can set up in cover and get 36" range that can fire 2 squads at different targets.
I guess it comes down to what you like to do. I just found my blaster squad felt a lot like a suicide dragon squad I used to run in a falcon in 4th ed. Im ok with the opponent diverting fire from my wyches in raiders towards a 98 point squad in cover

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But the blaster squad is a viable option and it can give certain advantages like getting to rear armor. Also dawn of war can make the blaster a better chance of a 1st turn shot.