I've thought of making some charts in the past, but then I realized I'd probably be disappointed in how little attention they'd get and I dropped the thought out of lack of motivation haha... Kind of a pathetic view on content creation, I know. I just don't think I'd want to play my own stuff after working and tweaking it for so long, so it feels like you'd HAVE to have some people play it to make it feel worthwhile.
FWIW, there's a very real lack of good (emphasis on "good") North American edit charts. I have no idea why Sega decided to region lock edit charts, but it's really limited the amount of stuff you can get without a JP copy of the game. From what I can tell, it seems that the most of the people invested enough in the Project Diva series to create quality edits are all using JP copies of the game (even among English speakers). I have found
maybe 60 edits for my english copy of F2nd that I consider to be high quality.
What I'm saying is, if you can make some good charts that work with the North American game, and you take the time to tell people about it, you have a decent chance of getting noticed.
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On another note, if enough people are actually interested in edit charts, I've been thinking: From what I can tell, there's nothing stopping you transferring edit chart save data directly (using Sony's standard save data transfer tools) as opposed to using PSN. It might be nice to put together some kind of community package, just because even assuming you can find a good edit chart, the in-game method for downloading them one-by-one is both tedious and time consuming.
I'd be happy to put together such a package myself, except that I have the PS3 version of game, and the vast majority of players here seem to use the Vita version. I'm assuming the PS3 and Vita games don't use the exact same save format.