Here's an idea suggestion I have in mind.
I know it may be impractical, but if anyone would make a Game Boy Advance homebrew tool to allow dumping cartridges and BIOS from another GBA using a Link Cable, that would be mind-blowing.
Yes, I know a user named FIX94 made a similar GBA dumper app...
I have a few idea suggestions for a new definitive version for the EZ-FLASH Junior. Here's what I have in mind:
Batteryless Rumble (ideal for rumble-compatible Game Boy games, such as Pokémon Pinball. Normally GBC Rumble carts require one AAA battery for them to vibrate, but the Batteryless...