From a business point of view it makes sense, as SCE are the starter army for AoS. When something is introduced, it tends to create new aspects of gameplay and lore, so they’ll want the starter army to be able to partake in that so new players can get involved (eg, SCE getting wizards to coincide with endless spells). At the end of the day they have to make money and be inclusive to new players, and for people who aren’t bitter about WHFB or haven’t been playing long enough to get bored, SCE are an interesting army that’s easy to paint, simple to play with, look good and have plenty of avenues for expansion.
However, the downside of this is that they get a disproportionate amount of releases compared to other armies, and to us players of said armies it comes across pretty unfair. It sort of is, but understandably so in my opinion, and anyway, our army is more or less complete and the existence of this page shows they definitely aren’t abandoning the other factions either. It may be something to complain about, and I think it’s fair enough if you do, but hey, we’re a bunch of nerds, we can always find something to complain about - if it wasn’t this, it would just be some other reason why GW has RUINED IT FOREVER!!!
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@LizardWizard managed to get in just as I was about to post it - sounds like we have similar thoughts on the subject)