What is possible?

[Bytebait]

I know there is emulation, but I don't know what is possible?
What are some variables that we have control over without needing a c++ compiler.

For example: adjust xp, drop rates, spawn custom vendors with items, can we make gnome beastlords and ogre monks?

[Sturm]

I know there is emulation, but I don't know what is possible?
What are some variables that we have control over without needing a c++ compiler.

For example: adjust xp, drop rates, spawn custom vendors with items, can we make gnome beastlords and ogre monks?

Yes and lots more.