When they got rid of the legion-specific torsos I had a momentary fear that this was wave one of getting rid of shoulder pads and heads eventually. Thankfully, that turned out not to be the case, but it’s still very much a possibility given how many people don’t bother to get legion-specific upgrades—when they look at their sales figures, the upgrade sets must lag significantly behind kits that are not legion-specific. This is a business-level problem that goes back to the whole thing with TSR and its campaign settings, if anyone here remembers that story: AD&D had split its products into Planescape, Dark Sun, Forgotten Realms, etc., and when the game was acquired by Wizards of the Coast, the new company deemed that this split was a problem for sales. Person 1 buys stuff from campaign settings A and B, person 2 buys stuff from campaign settings C and D, etc. For 3rd edition D&D, WotC found they made more money when all of their customers were buying the same products. I bet Forgeworld is aware that, given the nature of 30k being mostly legions, they have kits they can release that nearly all players will want to buy, whereas legion-specific stuff is going to get less play. Even within legion specific stuff, there are things like special terminators that are “worth it” to many players bc they have unique abilities in terms of rules, whereas shoulder pads, heads, and torsos only make a difference in terms of storyline/ appearance.
I’m not saying I support these kinds of moves—I still have a stack of unopened Sons of Horus torsos from back in the day and will be stocking up on heads (they’re currently “temporarily out of stock”) when I get the chance—but it looks to me like this is a calculated move to cut products that are only bought my small segments of their fan base and move those customers towards buying things (like the new tanks) that make a difference in terms of the rules and can be used by any of the legions.