That depends on your list. If I would have to think of something:
2x5 Assault Scouts in
LSS seems awesome.
With the Cerberus you can make the enemy WS1 before charging into them.
Hellfire Shells are really awesome too.
For such a list I would use Ultramarines, and this is why:
-Telion as pseudo-Warlord.
-Reroll all 1's for a turn (or 2).
-Characters!
The amount of
TL you can do is insane!
-Calgar can take Storm of Fire and double Tactical Trait
-Tigurius for Storm of Fire and Prescience (I also like his Reserve-manipulation)
For 1500 points I would do:
Calgar (in Termi-armour) joining Assault Terminators.
2x5 Assault Scouts in a
LSS (Combat Knife and Pistol for 3 Attacks on the charge)
2x10 Bolter Scouts with some Heavy Weapons
10 Snipers with Telion
5 scouts with an
ADL + QG.
That gives you 55 scouts and you still have 150 or so points for more
AA,
AT or Scout-bikers.
Those 150 points are after I gave those non-
CC scouts Camo-Cloaks.
I would really give those bolter-Sgts Teleport Beacons, so you can drop Calgar and his
CC-Terminators exactly where you need them.
Might not be a 'good or strong' list, but it seems awesome and I want to try that myself.
Hopefully they'll allow me to proxy some normal marines into Scouts