Thank you for the feedback! Both are very good points.
Regarding NTSC compatibility, the current development and testing have been focused on PAL machines. I agree that the TED's PAL/NTSC selection bit should not be overwritten unnecessarily, but I also want to verify the different timing requirements before claiming full NTSC compatibility.
Ideally, I'd like to support both standards with a single executable.
As for the cursor keys, you're absolutely right. There's no reason not to offer them as an alternative to WASD, alongside joystick control. I'll include this in the planned improvements.
Let me work on it a bit.
Thanks again for the valuable suggestions!