First of all I would like to thank you very much for doing this. This has been a very long lasting dream ever since we saw the excellent C64 port. As far as the graphical style goes I find it perfect. Even the turban fits in nicely, altough I got used to the Atari St prince without one. Do not change anything and concetrate finishing the project would be my advice :).
If you need playtesting with real hardware just let me know. I already played the game with 130 XE and SIO2SD and it works ok. If the prince dies the game tends to be stuck after a moment, tough. I've also got a 800 XL and 65XE for playtesting if needed.
Next project: Bubble Bobble anyone?