The ero is important to me too. I’ll buy the game whether it has ero or doesn’t, just because it’s Eien no Aselia (I couldn’t say that for every game). But I’d REALLY rather have the Special Edition that has the ero + all the extras in the all-ages version. And I’m willing to pay extra for it.
But yes, JAST is clearly trying to reach out to new markets. Obviously their current market is the adult crowd, because they’ve never brought an all-ages game over. So of course there will be some resistance. Even Mangagamer, which has a small catalog of all-ages games now, has always brought over the 18+ version when it exists–and they claim based on sales that their fans are more of the story-oriented type.