On a note slightly similiar to the Lasher thread: wow, those suck. I've been playing some missions recently, and many ships in there come with Sabots. And they're really not useful at all, even in those restricted loadouts.
If you fire one up close, it'll immediately get targeted by PD and shot down before it deploys.
If you fire one from a distance, it'll spread out and most of the projectiles will miss.
Even if it connects, it's very easy for the AI to just drop shields and take it on armor with minimal damage, and because the exact timing of when the sabots deploy is unpredictable, it's extremely difficult to reliably sneak in HE damage during that gap.
Their ammo is very limited, so you couldn't rely on them as your only shieldbreaker even if they were effective.
In short, I don't see any reason to use Sabots on any loadout, ever.
What ideas do you have for a more useful shieldbreaker missile? I'd imagine something that launches at high velocity with good tracking, and before impact explodes into a spread-out cloud of needler-like projectiles. More reliable, because it avoids the awkward hovering of Sabots, and it gives a wider window for shooting because the cloud is a threat to shields for a little longer.