All right, based on the feedback, I see two main options and a third one that's basically staying the course.
Option 1: Make a monthly Japanese mobile games thread.
1.) After earnings season ends (it will be over in a few more days) and we have a variety of data to work with, try to start up a new series of monthly Japanese Mobile Games sales threads that include that month's App Annie top-10 earners, the Sega revenue ranking chart (so we have a barometer for how sales performance works for top titles), and any other notable information for that month (new releases - at least as is possible given the low level of English reporting on this - and any other type of information we get like daily earnings or other such things).
2.) For overlapping games, post in both threads as normal. For example, when Snack World comes out, it would make sense to put its mobile performance in the Media Create thread and its Media Create performance in the mobile thread since we're comparing the performance of the SKUs. It would also make sense to discuss how things like Monster Strike and Puzzle & Dragons did/are doing on mobile when discussing the dedicated games. There are obviously judgment calls involved in this.
3.) My main concern is that at this point I don't think there's an obvious home for discussing the Japanese industry as a whole, which I'm not sure is especially helpful. In this scenario, neither thread is an obvious fit for discussing how the interactions between Capcom's ambitions in mobile/online and how their ambitions in dedicated gaming interact. The same is true for Square Enix, Sega, or even Nintendo, who seems interested in using mobile games to onboard potential customers to their dedicated devices through My Nintendo rewards. This is also true for IPs as a whole. A page or two ago I went over how Dragon Ball's audience in Japan seems to have had a notable shift to mobile, but how Namco is incentivized to keep making dedicated games due to how the IP performs worldwide. However, if this is preferred, I'm certainly not opposed to it.
Option 2: Overhaul Media Create into Japan Sales Weekly (we can leave the titles mostly the same an append onto them for searching purposes).
1.) The most common complaint about the mobile posts was that people felt it was hard to find old dedicated information in these threads. NPD threads lack full information in the OP/first few posts for externalities don't exist for Japan. We can shift the Media Create threads to reserving the first few posts for all the types of information we actually track. We put Media Create and Famitsu in there currently, but I don't see much reason to not have a second post that tracks all the information we seem to value less, but still follow. We could put in Dengeki, Comgnet, upcoming release schedules, the prediction league titles, the prediction league scoreboard, the monthly digital sales, notable sales announcements, links to financial results, quotes of notable executive statements about sales, or anything else of that nature that people see fit. I'm fine with just editing those posts to contain that information since generally they're just "woohoo I love Game X!" so I'd just add a "--------------------------------" and then put in that type of information below. If people want to make sure their information gets put into one of the first posts, they can just put in a red highlighted "Log To Top" and I'll try to make sure it gets done. Digging up historical information would be much easier this way since you'd only ever have to look at the first few posts to have everything notable. The OP itself stays the same as it always does in this scenario, and it's only the first couple of replies that have additional information.
2.) If we do step one, similarly we can put mobile in either the second or third post and have it contain the same types of information that would otherwise go into the mobile monthly sales thread as described above. At this point we also have everything presented in one place and it's easy to discuss the overall industry. Mind, the discussion would probably be more varied in the thread at this point since we're very openly expanding to the entire industry, including things about dedicated games we don't always discuss in an organized manner.
Option 3: Leave things as is.
1.) This is also an option, but since we seem to have a variety of strong opinions on this, I feel we should probably go with one of the above.
Edit:
If it's helpful I can convert posts 2 and 3 of this thread as an example of Option 2.
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Admittedly I was being unfair there. My apologies. Thanks for the feedback.