I recently started working with FEBuilder. After losing a bunch of progress on a simpler hack I was making for FE7 when expanding the item graphics table made staves crash the game, I'm thinking of using an existing hack, The Last Promise by Blazer, as a base for my next project. Its item graphics table is already expanded, and I don't want to lose entire chapters of progress because I want to give the axe guy the Hatchet from FE8.
I'm not sure what I'm supposed to do as far as permissions. If this hack were to be completed, I would most assuredly credit Blazer, as well as basically everyone else on Last Promise's Credits page (and might I add, Blind Archer's Halberdier is so cool that I plan to have two of them as town guards on the prologue map), but I don't know what else would need to be done or if I'd even be allowed to do this. For all intents and purposes, it'd be a completely separate game from Last Promise, with completely different characters, story, and maps.
I'd like to get permission related things worked out before I get too far into development, and I figured this was the best place to ask questions.
I'm well aware now that this is a terrible idea, and will not be doing this. Please do not bite my head off.