Questions in GameBoy Community

I got a question, I could find the answer myself, but I wanna ask in case someone knew.

For I wanna take full control of the entire Super Nintendo with uploaded code through the Super Gameboy.

Do you think there's programmers now adays that would upload code to the SNES through the SGB?

What gameboy games have you played with absolutely huge levels, where you don't go through a loading zone or a door to go somewhere else in the world?

tell me about it, I'm interested to hear what you got