Catapult is in both the last set of plastics and the current ones. Stalker is a bigger wad of 'deep' plastic. Raven, a bit narrower than the Catapult, Dragon has a beak on it . . .
Those are very different from the Clan omnis I mentioned, specifically the arms. Let me know how you see the Masakari and Daishi being cast/molded in the exact same way.
I sculpted the Catapult's legs specifically so that it could be molded like in one piece. The original legs could not have been done that way. That's the pose you get with those style legs. Now imagine every mini you own with chicken legs in that exact same pose. If they have arms, they'll be pointing slightly down and probably open a bit. Gets a little boring with the hundreds of miniatures available. The plastic packs evolved further than the original
Beginner's Sets that I created, but they still didn't cover the 3050 Clan omnis. There's a reason for that, and I doubt that it was lack of demand.
Here's the deal: experienced modelers have the skills to modify static poses. Inexperienced players will not bother putting together complicated models. The less assembly, the better.
That is exactly why I created the metal
Beginner Sets back in the day, plus one more reason: They would be a little cheaper than buying better-detailed individual minis, because, let's face it, the average BT'er wants cheap product. And that's a problem. The plastic lance packs didn't sell fast enough to be worth it because of the higher-than-metal overhead. How many of the plastic sets sat on shelves until they were on sale? I would guess the half-price fire sales that went on the last couple of years probably account for a not unsubstantial percentage of total sales. Those were the best, cheapest, and most generic product produced and they still weren't good enough.