This may be too ambitious but I think it would speed up things a lot faster if someone expanded the data to include all characters and classes from the GBA games into one FE7 or FE8 rom. I simply stopped work on my game because I screwed all the hex up. Had all my characters, faces, items, classes ready from the GBA games I just couldn't expand my rom right. I'td be awesome if people good at adding that data with hex editor could collaborate into one super rom with all those characters and stuff so we all can all start our hack using it as our base rom. Of course if you need more than all the GBA content you could always expand it again but I'm sure some of us hate adding Marth, Roy, even a custom Ike into our every hack we make and expanding the character data wrong.
Point is several of us could all work on inserting tons of classes and characters on one rom and making it available to all as a "starter pack" rom so to speak. If we want Moulder, Roy, Eliwood, Gerik, Bartre, and Myrrh in the same game we download the super rom bc theyre all already in it. With all the expanding already done we can spend more time on other aspects of the game because expanding is nothing but busy work (personally I get headaches when we start talking hex and free space ranges. Of course it may cause issues if it got too big