Since around the year 2000 I have been piling features into a French Final Fantasy IV translation patch. Variable-width fonts in dialog, in battle messages, in menu descriptions. Redrawn battle, load/save, main, and two-column magic menus. An expanded inventory of 0x48 slots rendered through a paged window instead of the static grid the original engine assumed. Most of these were features the SNES ROM hacking scene of the era said could not be done on real hardware. Other hackers eventually pulled off equivalents on other titles, fair enough; modifying a compiled ROM is more convoluted than editing source code, but not impossible. Twenty-five years on, “impossible” reads as a fair approximation of how hard, not of whether.