@ jacksprat1
I think they may be keeping the adult and all-ages separate more with an eye to a future growth rather than it being the most practical thing at the present. If they grow their offerings on Steam or whatnot, my guess is they may be concerned that new fans whose interest gets caught by the all-ages games might run away screaming if immediately confronted with Let's Meow Meow and Tsuki: Possession upon visiting the site.
I think that's the reasoning but Steam itself could act as their storefront for all-ages titles and JAST USA would be their adult storefront. Also the first thing any Steam customer will be greeted with upon visiting the website right now is an advertizement for Starless that leaves very little to the imagination. If their going to keep separate stores I'd say don't promote adult goods on it and maybe alter the color scheme for each page, keep blue and white for all-ages and make it maybe red and white for the adult store.
Also I really like the flowchart you posted. I think that should be included in every game and not just in a select few. Regarding the initial controversy, if you don't like it you don't have to use it (kind of like an easy mode in non-visual novel games). It just makes sense to have it in case you get stuck and its something JAST could use to distinguish itself from its competition.
On the "game trailers," they're actually doing that now with their physical copies, or at least used to do that in the recent past. You just have to know where to find the trailers, which isn't especially obvious. (On a standard PC) when you pop the game DVD-ROM in your computer, go to "Computer" and examine the contents of the disk in the DVD-ROM drive.
I didn't know about that. Maybe at the end of the game installer they could make users aware of said trailers (and free demos if they decide to include them).
@ Dark_Shiki
I think they tried adding download cards to hard copies. So far it seems to be confusing people, who think they're getting a "buy one get one free" deal.
From what I understand it varies from title to title whether or not its included in the box or if its delivered via email only to J-List customers. Also if its confusing people the instructions on the card need to be a little clearer and it wouldn't hurt if the site used to redeem the code was easy to identify and access from the main webpage.
Currently I can only find a title when I specifically search on it. That's kind of a problem since your shop should be a tool for discovery, not just a place to buy a title you're already looking for.
Maybe I'm misunderstanding your post but you can easily browse through all titles by selecting "View all Visual Novels in English." Of course search results are limited based on which site you've selected (all-ages or 18+).