Hi Stan,
Constructive criticism - I have just tried your software and it shows fantastic potential! May I make a couple of suggestions for improvement.
1) I would be great if the left hand site 'Coding Window' allowed us to actual code. This would be beneficial as we would have immediate (instead of - compiled, saving, loading into unoardusim and repeat) feedback for our (newbies) code.
2) The ability to import a Hex file to be simulated.
3) The inclusion of some more hardware eg 1602 displays, 4x 7segment displays, resistive sensors (temp), optical encoders
Thanks again