Well the thing, again, is that the Nspire Lua implementation made by TI is event-driven, and this whole structure would have to be ported over the prizm. It's definitely doable, but would take quite a while to make it act like on the Nspire...
Nomnom, want me to port PCspire?
If anyone sends me a free casio I will do it
I'll look into the casio api when I have some time