Great work! I was wondering about this after trying out Easy6502. It would be nice to have a more visual component like Easy6502 which has a draw buffer and snake game tho :)
That's one of the first things I suggested to the author ... RV32I has a lot more registers to display than 6502, so I guess there was no room for the graphics output display.
Maybe doing RV32E plus a graphics output would be a good compromise. Sixteen registers is probably enough for any program people are likely to write in this --- and you can tell GCC/LLVM to generate for RV32E if you want to compile C code and paste the asm in. (I'm not sure whether the assembler can actually cope with that)